contestada

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

Respuesta :

Answer:

[tex]A=502.4\ \text{inches}^2[/tex]

Step-by-step 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 :

[tex]A=4\pi r^2[/tex]

For 10 balls,

[tex]A=10\times 4\pi r^2\\\\=10\times 4 \times 3.14\times (2)^2\\\\=502.4\ \text{inches}^2[/tex]

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

Otras preguntas