Question

What is the radius of a semi-circle which covers an area of 157 dam2. (Take π =3.14)

Answer 1

Answer:

5 dam

Step-by-step explanation:

let the radius of semi circle be r

then area is (0.5×3.14×$r^{2}$) = 157 ⇒ $r^{2}$ = 25 ⇒ r= 5