Question

The advertised size of a pizza is the diameter of the pizza. Which is closest to the area of the crust of a 15-inch pizza?a. 707 square inches b. 177 square inches c. 225 square inches d. 47 square inches

Answer 1

To find the area of a circle using this rule

$\begin{gathered} A=\pi r^2 \\ \end{gathered}$

Where r is the radius of the circle

Since the diameter of the pizza is 15-inch

The radius = 1/2 diameter

$r=\frac{1}{2}\times15=7.5$

So the radius is 7.5 inches

Let us substitute it in the rule and use pi = 3.14

$A=3.14(7.5)^2=176.625$

Round it to the nearest whole number

So the area of the crust = 177 square inches

answer b