Calculating the Area of a Circle

The video tutorial discusses how to determine which pizza is preferable when hungry by comparing their areas. It explains that the larger pizza provides more food due to its greater area. The tutorial demonstrates how to calculate the area of both a small and a large pizza using the formula for the area of a circle, pi times radius squared. The small pizza has a radius of 8 cm, resulting in an area of 200.96 square centimeters, while the large pizza has a radius of 14 cm, resulting in an area of 615.44 square centimeters. The larger pizza is shown to be a better choice for a hungry group as it offers over three times more area.

Why might you choose the pizza on the right if you're very hungry?

• It has more toppings.

• It is cheaper.

• It has a larger area.

• It is easier to share.

What is the formula used to calculate the area of a circle?

• Area = 2 * pi * radius

• Area = pi * radius squared

• Area = pi * diameter

• Area = 2 * pi * diameter

What is the radius of the smaller pizza?

• 10 centimeters

• 14 centimeters

• 8 centimeters

• 12 centimeters

How much area does the smaller pizza have?

• 250.3 square centimeters

• 200.96 square centimeters

• 150.5 square centimeters

• 300.2 square centimeters

What is the area of the larger pizza?

• 700.2 square centimeters

• 615.4 square centimeters

• 800.1 square centimeters

• 500.5 square centimeters