Question

find the perimeter of

Answer 1

(i) Perimeter fo shape = Perimeter of Rectangle + Perimeter of Semi-circle
Perimeter of rectangle = 2(l+b) => 2(12+6) = 36 cm
Perimeter of Semicircle = 1/2x2x22/7x3 = 9.42 cm (d=6 cm, r=3 cm)
=> 36.00+9.42 = 45.42 cm

(ii) Perimeter of shape = Perimeter of rectangle + Perimeter of Circle (Since 2 semi-circles together form a circle and they have equal radius)
Perimeter of Rectangle = 2(28+14) = 84 cm (In semi-circle, r=7 cm, d=14cm)
Perimeter of Circle = 2x22/7x7 = 44 cm
84 + 44 = 128 cm

Answer 2

Step-by-step explanation:

ur answer in attachment