Question

If you were to cover a pizza with cheese, how much area, rounded to the nearest whole number, would you need to cover with cheese if the pizza had a circumference of 31.4 inches?

Answer 1

79 square inches

Explanation:

First, let's find the diameter given the circumference.

• 
  `C=\pi d`
• 
  `d=(C)/(\pi )`
• 
  `d= 31.4/3.14`
• 
  `d=10`

Next, we know the the radius is half the diameter, so the radius is 5 inches. Now, we can solve the area of the circle.

• 
  `3.14 * 5^2`
• 
  `3.14 * 25`
• 
  `78.5`
• 78.5 ≈ 79 square inches

Therefore, the answer is 79 square inches.