Question

Find the diameter of a circle whose area is 13.6 metre square

Answer 1

Answer:

4.2 m

Step-by-step explanation:

Let r be the radius of Circle.

Diameter of circle d = 2r.

Formula for area of Circle = πr² = π (d/2)² = πd²/4.

 Given, Area of circle = 13.6 m²

=> πd²/4 = 13.6

=> d² = 13.6 * 4 * 7/22 = 17.31

=> d = √17.31 =  4.16 ~ 4.2 m.