Question

if a wire is bent into the shape of a square the area of the square is 49 CM square. when the wire is bent into a semicircular shape find the radius of the semicircle?

Answer 1

Area of wire in shape of square=Area of wure in semicircular shape
=)49=1/2×22/7×r^2
=)49×7/11=r^2
=)31.18=r^2
=)r=root 31.18
Hence,r=5.58 cm
Hope it helps u.