Question

Find the perimeter and area of semicircles whose radii are,

(i) 35 cm (ii) 10.5 cm (iii) 6.3 m (iv) 4.9 m

Answer 1

perimeter= π×35/2 cm
area = π×35×35/4

Answer 2

perimeter of semicircle=πr
area of semicircle=πr^2
(1) perimeter of semicircle = πr = 35π
area of semicicle = π(35)^2 = 1225π
(2) perimeter of semicircle= πr = 10.5π
Area of semicircle = π(10.5)²= 110.25π
(3) perimeter of semicircle = πr =6.3π
area of semicircle = π(6.3)² = 39.69π
(4) perimeter of semicircle = πr = 4.9π
area of semicircle = π(4.9)² = 24.01π

i hope this answer solution help u cutuepie