Question

A pizzeria sells a round pizza with a diameter of 16 inches.

Another pizzeria sells a large square pizza with a side length of 15 inches


Which has more crust along the outside edge of the pizza, the round pizza or the square pizza?

Answer 1

Square pizza

Explanation:

d = Diameter of round pizza = 16 inches

a = Side length of square = 15 inches

More crust means the edge length of the pizza is greater. Edge length is given by the perimeter.

Circumference or perimeter of the round pizza

`C=\pi d\\\Rightarrow C=\pi* 16\\\Rightarrow C=50.27\ \text{inches}`

Perimeter of the square is

`P=4a\\\Rightarrow P=4* 15\\\Rightarrow P=60\ \text{inches}`

So, the square pizza has more crust compared to the round pizza.