1 Answer

Julien Schmidt · Answer 1 · 2023-06-30T12:32:28+0000

Surface Area of a Sphere

Given a sphere of radius r, the surface area is calculated by:

$S=4\pi r^2$

The diameter of the paintball is d = 2.8 cm, thus the radius is r = 1.4 cm

The amount of paint on the sphere is equivalent to the surface area, or:

$S=4\pi(1.4\operatorname{cm})^2=24.63\operatorname{cm}^2$

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