Question

This figure consists of a rectangle and semicircle.

Answer 1

Perimeter includes three sides of rectangle:

15m + 12m + 15m

Plus half of circle with diameter 12m

Circumference = diameter * PI

Circumference = 37.68m.

1/2 circumference = 18.84m

Total perimeter is 15m+12m+15m+18.84m

60.84m

Answer 2

Answer:  First option is correct.

Step-by-step explanation:

Since we have given that

Length of rectangle = 12 m

Breadth of a rectangle = 15 m

Radius of semi-circle is given by

$\frac{12}{2}=6\ m$

So, Perimeter of this figure is given by

$12+15+15+\pi\times r\\\\=42+3.14\times 6\\\\=42+18.84\\\\=60.84\ m$

Hence, Perimeter of this figure is 60.84 m.

Therefore, First option is correct.