18. A soccer ball has a radius of 35 centimeters. To the nearest square centimeter, how much material is needed to make a ball? Use pi = 3.14

Step-by-step explanation:

Given

Required

The area of the ball

A soccer has the shape of a . So, the area is:

So, we have:

Using a calculator, we have:

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!