Question

A wire frame is in rectangular shape which is 43 cm long and 47 cm broad. If the wire is reshaped in a semi-circular shape as shown below. The radius of the semi circle will be ______ cm. (assume π = 22/7

Answer 1

perimeter of rectangle = circumference of circle

2 (l+b) = 2

Answer 2

perimeter of rectangle = perimeter of semicircle

2(l+b) = 1/2*2πr

2(43+47) = 22/7*r

2*90*7/22 = r

90*7/11 = r

630/11 = r

57.27 = r

PLZZ MARK AS BRAINLIEST