{"id":227527,"date":"2025-06-06T07:40:39","date_gmt":"2025-06-06T07:40:39","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=227527"},"modified":"2025-06-06T07:40:41","modified_gmt":"2025-06-06T07:40:41","slug":"two-circles-two-circles-on-a-cartesian-plane-a-and-b-are-each-defined-by-three-descriptors-x-the-x-coordinate-of-the-circles-center","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/06\/two-circles-two-circles-on-a-cartesian-plane-a-and-b-are-each-defined-by-three-descriptors-x-the-x-coordinate-of-the-circles-center\/","title":{"rendered":"Two Circles Two circles on a Cartesian plane, A and B, are each defined by three descriptors: \u2022 X: the x-coordinate of the circle&#8217;s center"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Two Circles Two circles on a Cartesian plane, A and B, are each defined by three descriptors: \u2022 X: the x-coordinate of the circle&#8217;s center \u2022 Y: the y-coordinate of the circle&#8217;s center \u2022 R: the radius of the circle Circles A and B will both be centered either on the X-axis (i.e. YA = 0 and YB = 0), or on the Y-axis (i.e. XA = 0 and XB = 0), but not both. A pair of circles (A and B) will have one of the following relationship types: \u2022 Touching: they touch each other at a single point \u2022 Concentric: they have the same center point \u2022 Intersecting: they intersect each other (touching at two points) \u2022 Disjoint-Outside: disjoint with one existing outside of the other \u2022 Disjoint-Inside: disjoint with one contained inside the other (but not concentric) Example: circlePairs = [&#8217;30 105 03&#8242;, &#8217;01 40 15&#8242;] Each string has 6 integers that represent X, Y, and R for circle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 Answer: <strong>Disjoint-Inside<\/strong><\/h3>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\udde0 Explanation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We are given two circles defined as strings in the form <code>'X Y R'<\/code>, where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>X<\/code> is the x-coordinate of the center<\/li>\n\n\n\n<li><code>Y<\/code> is the y-coordinate of the center<\/li>\n\n\n\n<li><code>R<\/code> is the radius<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The two circles given are:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>'30 105 03'<\/code> \u2192 Circle A: X=30, Y=105, R=3<\/li>\n\n\n\n<li><code>'01 40 15'<\/code> \u2192 Circle B: X=1, Y=40, R=15<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s extract the values:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Circle A: center at (30, 105), radius = 3<\/li>\n\n\n\n<li>Circle B: center at (1, 40), radius = 15<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">First, verify axis alignment:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Both circles have <strong>non-zero x and y<\/strong>, but to follow the problem constraints (centers lie <em>either<\/em> on the X-axis or Y-axis), we must <strong>assume<\/strong> either:\n<ul class=\"wp-block-list\">\n<li>X-axis case: YA = 0 and YB = 0 \u2192 Not true (since YA = 105, YB = 40)<\/li>\n\n\n\n<li>Y-axis case: XA = 0 and XB = 0 \u2192 Not true (since XA = 30, XB = 1)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">However, the question may have a typo, or we assume the values were read with missing zeros. Possibly:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>'30 105 03'<\/code> = X=30, Y=0, R=105<\/li>\n\n\n\n<li><code>'01 40 15'<\/code> = X=1, Y=0, R=40<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s recalculate using this interpretation:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Circle A: center at (30, 0), radius = 105<\/li>\n\n\n\n<li>Circle B: center at (1, 0), radius = 40<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Now they are <strong>both centered on the X-axis<\/strong>, satisfying the condition.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 1: Distance between centers<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Distance = |30 &#8211; 1| = 29<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Step 2: Compare with radii<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Radius A = 105<\/li>\n\n\n\n<li>Radius B = 40<\/li>\n\n\n\n<li>Sum = 145 \u2192 Distance (29) &lt; 145<\/li>\n\n\n\n<li>Difference = |105 &#8211; 40| = 65 \u2192 Distance (29) &lt; 65<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">So, one circle is completely inside the other <strong>without touching<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2705 Relationship: Disjoint-Inside<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Circle B is entirely inside Circle A, but their edges do not touch. Thus, they are <strong>disjoint inside<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Final Answer: <strong>Disjoint-Inside<\/strong> \u2705<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-78.jpeg\" alt=\"\" class=\"wp-image-227528\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Two Circles Two circles on a Cartesian plane, A and B, are each defined by three descriptors: \u2022 X: the x-coordinate of the circle&#8217;s center \u2022 Y: the y-coordinate of the circle&#8217;s center \u2022 R: the radius of the circle Circles A and B will both be centered either on the X-axis (i.e. YA = [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-227527","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/227527","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=227527"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/227527\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=227527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=227527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=227527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}