Question

A spherical tank is 21 cm in diameter. Find the surface area and volume.​

Answer 1

Explanation:

diameter =21/2=10.5cm

surface area =2pai r square

2×22/7×10.5×10.5

11×1.5×10.5= 173.25cm square

volume =4/3pai r cube

4/3×22/7×10.5×10.5×10.5

88/21×1,157.625

8,103.315÷21

answer is 385.875