Question

The area of a circle is 42.71m2.

Find the length of the diameter rounded to 1 DP.
PLEASE IM BEGGING ANSWER THIS ASAP

Answer 1

7.4 meters

Explanation:

Solve for the radius:

`A=\pi r^2`

`42.71=\pi r^2`

`(42.71)/(\pi)=r^2`

`\sqrt{(42.71)/(\pi)}=r`

Solve for the diameter:

`d=2r`

`d=2\sqrt{(42.71)/(\pi)}`

`d\approx7.4`

Therefore, the diameter of the circle is about 7.4 meters

Answer 2

d=7.4

d= =square 1.

Explanation: