Question

Betty made a pie with a diameter of 10 cm. What is the area of the pie. (Use pi=3.14)

Answer 1

Question: What is the area of a circle whose diameter is 10cm? Answer: First half the diameter (10) to give the radius, so 10 divided by 2 is 5. Now multiply 25 by Pi to give 25Pi. If you want your answer as a decimal then multiply 25 by 3.14 to give 78.5 to 1 decimal place.