Exercise 28 Page 65

To find the area of a circle, we need the radius of the circle. We know that this circle has a diameter of 8.3m By dividing the diameter by 2, we can find the radius of the circle. r=d/2 ⇒ r&=8.3/2 r&= 4.15 m Now, we are able to find its area.

A=π r^2

Substitute

r= 4.15

A=π ( 4.15)^2

CalcPow

Calculate power

A=π(17.2225)

Multiply

Multiply

A=54.10607948

RoundDec

Round to 1 decimal place(s)

A≈ 54.1

The area is approximately 54.1 m^2.