Question

with a radius of 7cm and another with radius of 10cm find the approximate difference between the area of circles.​

Answer 1

160.2857143

Explanation:

1.for the circle with a radius of 7cm:

• multiply 3.14 (or 22 on 7) by the square of 7
• you then get 154

2.for the circle with a radius of 10cm:

• multiply 3.14 (or 22 on 7) by the square of 10
• you then get a mixed fraction of 314 (whole number) and 2 on 7
• if you expand it, it will be 314.2857143

finally you subtract 1 from 2 and you have your answer