Question

A leather ball has a diameter of 28.4 cm. Which is the area of the piece of leather used on the surface of the ball?

Answer 1

Answer: 806.46pi cm^2

Explanation:

Answer 2

• ≈ 2533 cm² leather used

Explanation:

The ball has the form of sphere

Diameter is:

• d = 28.4 cm

Surface area of a sphere is:

• A = 4πr²= 4π(d/2)² = πd²

Substitute values:

• A = 3.14*28.4² = 2532.5984 cm² ≈ 2533 cm²