I weigh 76.5 kilograms. Use the conversion factors below to calculate my weight in stone.
1 kilogram (kg) = 2.2 pounds (lb)
1 stone (st) = 14 pounds (lb)
Give your answer to the nearest whole number.
st
The average person has 8 pints of blood in their body. Use the conversion factor to calculate how much this is in litres.
1 pint = 568 ml
Give your answer to 2 decimal places.
litres
The correct Answer and Explanation is:
Weight Conversion:
To convert your weight from kilograms to stone, we first need to convert kilograms to pounds and then pounds to stone using the provided conversion factors.
- Convert kilograms to pounds:
You weigh 76.5 kilograms, and each kilogram is equivalent to 2.2 pounds.76.5 kg×2.2 lbkg=168.3 lb76.5 \, \text{kg} \times 2.2 \, \frac{\text{lb}}{\text{kg}} = 168.3 \, \text{lb}76.5kg×2.2kglb=168.3lb - Convert pounds to stone:
Since 1 stone equals 14 pounds, divide your weight in pounds by 14 to find the equivalent weight in stone:168.3 lb÷14 lbstone=12.02 st168.3 \, \text{lb} \div 14 \, \frac{\text{lb}}{\text{stone}} = 12.02 \, \text{st}168.3lb÷14stonelb=12.02stRounding to the nearest whole number:12 st\boxed{12} \, \text{st}12st
Blood Volume Conversion:
To convert the volume of blood from pints to liters, we first convert pints to milliliters and then milliliters to liters.
- Convert pints to milliliters:
The average person has 8 pints of blood, and each pint is equal to 568 milliliters (ml).8 pints×568 mlpint=4544 ml8 \, \text{pints} \times 568 \, \frac{\text{ml}}{\text{pint}} = 4544 \, \text{ml}8pints×568pintml=4544ml - Convert milliliters to liters:
Since 1 liter is equal to 1000 milliliters, divide the volume in milliliters by 1000 to convert to liters:4544 ml÷1000=4.544 liters4544 \, \text{ml} \div 1000 = 4.544 \, \text{liters}4544ml÷1000=4.544litersRounding to two decimal places:4.54 liters\boxed{4.54} \, \text{liters}4.54liters
Explanation:
Conversions between units are essential in understanding measurements, especially when dealing with different systems like metric (kilograms, liters) and imperial (pounds, pints). In this problem, you needed to convert weight from kilograms to stone, a common unit of weight in the UK. We used two steps: first converting kilograms to pounds and then pounds to stone using the conversion factors 1 kg = 2.2 lb and 1 stone = 14 lb.
For the blood volume conversion, understanding pints and liters is crucial for medical and scientific applications. Since there are 568 milliliters in a pint, converting pints to milliliters and then milliliters to liters allows us to get an accurate representation of how much blood is in the body. Understanding these basic conversions helps ensure precise communication in both everyday contexts and professional settings.