koltanhamborsky koltanhamborsky

22-01-2020
Mathematics

contestada

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?

Respuesta :

mhanifa mhanifa

14-01-2021

Answer:

≈ 2533 cm² leather used

Step-by-step 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

Answer Link

zukhrap zukhrap

03-06-2022

Answer: 806.46pi cm^2

Step-by-step explanation:

Answer Link

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