Question

Find the surface area of a sphere of radius:

(i) 10.5 cm (ii) 5.6 cm (iii) 14 cm

Answer 1

(i) Radius (r) of sphere = 10.5 cm

Surface area of sphere = 4πr²

Therefore, the surface area of a sphere having radius 10.5cm is 1386 cm².

(ii) Radius(r) of sphere = 5.6 cm

Surface area of sphere = 4πr²

Therefore, the surface area of a sphere having radius 5.6 cm is 394.24 cm².

(iii) Radius (r) of sphere = 14 cm

Surface area of sphere = 4πr²

Therefore, the surface area of a sphere having radius 14 cm is 2464 cm².