Question

A circle has an area of 40 square meters. Which answer is closest to the measure of its diameter?

Answer 1

Answer: The correct answer is 7.12 m.

Step-by-step explanation:

The expression for the area of the circle is as follows;

$A=\pi r^{2}$

Here, A is the area of the circle and r is the radius of the circle.

Calculate the radius of the circle.

$A=\pi r^{2}$

Put A= 40 square meter and $\pi=3.14$.

$40=(3.14) r^{2}$

$r=3.56 m$

The expression for the diameter is as follows;

d= 2r

Here, d is the diameter of the circle and r is the radius of the circle.

Put r= 3.56 m.

d= 2(3.56)

d= 7.12 m

Therefore, the closest answer to the measure of the diameter of the circle is 7.12 m.

Answer 2

Answer:

7.1

Step-by-step explanation: