How much plastics will be needed to cover a beach ball with a radius of 20 inches

5,024 in²

Step-by-step explanation:

recall that the surface area of a sphere is given by

A = 4πr²

where r = radius = given as 20 inches

hence,

A = 4πr² (assume π = 3.14)

= 4 x 3.14 x (20) ²

= 5,024 in²