Question

Devin won a tiny bouncy ball at the school carnival. The diameter of the ball is 1.25 inches. To the nearest hundredth of a square inch, what is the surface area of the ball?

Answer 1

Given that the ball is in the shape of sphere the surface area will be calculated using the formula of the sphere:
SA=4πr²
where:
r=radius=1.25/2
Hence:
SA=4×π×(1.25/2)²
SA=4.9087 in²~4.91 in²