Pizza Area and Calorie Calculations

The video tutorial explains how to calculate the area of circular pizzas using the formula for the area of a circle, pi times the radius squared. It covers the calculation of areas for both a 6-inch and a 16-inch pizza, rounding results to two decimal places. The tutorial also discusses how to determine the number of calories in pizzas of different sizes, emphasizing that calories are proportional to the area, not the diameter or radius. Finally, it calculates the calories per slice when a 16-inch pizza is divided into eight slices.

What is the diameter of a circle?

• The distance from the center to the edge

• The area of the circle

• The distance around the circle

• The distance across the circle through the center

Tags

CCSS.7.G.B.4

How do you calculate the area of a circle?

• Radius times diameter

• Pi times radius squared

• Pi times diameter

• Diameter squared

Tags

CCSS.7.G.B.4

What is the radius of a 6-inch pizza?

• 9 inches

• 3 inches

• 6 inches

• 12 inches

Tags

CCSS.7.G.B.4

What is the approximate area of a 6-inch pizza rounded to two decimal places?

• 56.52 square inches

• 9.42 square inches

• 18.84 square inches

• 28.27 square inches

Tags

CCSS.7.G.B.4

What is the radius of a 16-inch pizza?

• 12 inches

• 4 inches

• 16 inches

• 8 inches

Tags

CCSS.7.G.B.4

What is the approximate area of a 16-inch pizza rounded to two decimal places?

• 250.12 square inches

• 100.53 square inches

• 150.72 square inches

• 201.06 square inches

Tags

CCSS.7.G.A.1

How are calories in a pizza related to its size?

• Proportional to the circumference

• Proportional to the radius

• Proportional to the diameter

• Proportional to the area

Tags

CCSS.HSG.C.B.5

How many calories are approximately in a 16-inch pizza?

• 1000 calories

• 580 calories

• 4124 calories

• 2010 calories

Tags

CCSS.HSG.C.B.5

If a 16-inch pizza is cut into 8 slices, how many calories are in each slice?

• 516 calories

• 412 calories

• 258 calories

• 100 calories

What is the total number of calories in a 6-inch pizza?

• 580 calories

• 201 calories

• 1000 calories

• 4124 calories