Question

a large pizza is advertised to have 14 inch diameter. If a costumer orders two large pizzas, how many squares inches of pizza will he receive?

Answer 1

Radius ^2 * pi = 1 pizza * 2 = area of 2 pizzas = 307.876 in ^2

Answer 2

In order to find the total square inches of the pizza we just need to find the area of one of the pizzas then multiply that by 2.

A pizza is a circle so we can use the Area of a Circle formula which is:
A = πr^2

A: Area
π: pi (3.14......)
r: radius (half of the diameter)

The diameter of the pizza is 14 inches so the radius is 14/2 = 7 inches.

Now we plug the radius into the equation.

A = π(7)^2
Simplify
7^2 = 49
A = π(49)
This means the area of one of the pizzas is 49π square inches.

To find total square inches for both pizza, multiply 49π by 2.

49π x 2 = 98π 

This means the customer will receive 98π square inches of pizza.