225k views
2 votes
A company makes plastic beach balls with a radius of 2 inches. How many square inches of plastic does the company

need to make 10 beach balls? Use 3.14 for sr and round to the nearest tenth.
Recall the formula SA-4x2.
O 50.24 in^2
O 100.5 in^2
O 251.2 in^2
O 502.4 in^2

User AGE
by
7.9k points

1 Answer

4 votes

Answer:


A=502.4\ \text{inches}^2

Explanation:

The radius of the ball, r = 2 inches

We need to find how many square inches of plastic does the company need to make 10 beach balls.

Let A be the area of 1 ball. Balls are in the form of spheres. The area of a sphere is given by :


A=4\pi r^2

For 10 balls,


A=10* 4\pi r^2\\\\=10* 4 * 3.14* (2)^2\\\\=502.4\ \text{inches}^2

Hence, the area of 10 beach balls is
502.4\ \text{inches}^2.

User CAPSLOCK
by
7.7k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories