Question

A 12-inch diameter pizza has 22 calories per square inch.

About how many calories are in the entire pizza?
Use 3.14 for pi.
Select from the drop-down menu to correctly complete the statement.

There are about calories in the pizza.

Answer 1

`2,486.88\ calories`

Explanation:

step 1

Find the area of the pizza

The area of a circle is equal to

`A=\pi r^(2)`

we have

`r=12/2=6\ in`

substitute

`A=(3.14)(6^(2))=113.04\ in^(2)`

step 2

we know that

A
`12-inch` diameter has
`22` calories per square inch

By proportion

Find how many calories are in the entire pizza

so

`(22)/(1)(cal)/(\ in^(2))=(x)/(113.04)(cal)/(\ in^(2))\\ \\x=22*113.04\\ \\x=2,486.88\ calories`