Question

This figure consists of a rectangle and semicircle.

What is the perimeter of this figure?

Use 3.14 for pi.

Respond
60.84 m

72.84 m


79.68 m


98.52 m

Answer 1

perimeter of rectangle = 2(l+b)

l=12m

b=15m

P = 2 ( 12+15)

P = 2 * 27

P = 54 m

P = 54 - 12

P = 42m

perimeter of semi-circle = pi*r

r = 12/2

= 6

3.14*6

= 18.84 m

Total perimeter = 42 m + 18.84m

= 60.84 m

Ans : 60.84 (1st)