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Sequoia Middle School
Mr. Toth
Homework
Lesson 33 – Circle Area Part 2
Name:
Date:
1.
A circle has a radius of 3 inches. What is its area?
2.
A circle has a diameter of 5 cm. What is it’s area?
3.
What is the circumference of a circle with a diameter of 20 cm?
4.
What is the circumference of a circle with a radius of 50 inches?
5.
A basketball hoop has a diameter of 18 inches, and a basketball has a circumference of 29.875 inches.
6.
a.
What is the area of the hoop?
b.
What is the diameter of a basketball?
c.
What is the area of a basketball?
d.
What percent is the area of a basketball compared to the hoop?
A circle is divided into 5 equal sectors. What is the measure of the central angle of each sector?
Per.
7.
To build a circle graph, you multiply the full circle (360°) by the percent or part that it represents. For example, the central angle
for a 25% sector would be 360(0.25) = 90. Convert the following percentages into central angles:
a.
8.
9.
10%
b.
66.6%
c.
30%
Complete the circle graph to represent the type of food eaten at Chipotle one night.
a.
Chicken burritos – 40
b.
Steak Burritos – 30
c.
Pork Burritos – 25
d.
Plain Quesadillas – 45
e.
Steak Quesadillas - 10
The International House of Pancakes sells small silver dollar pancakes (3.5 in diameter) and regular size pancakes (6 in
diameter).
a.
What is the area of a silver dollar pancake?
b.
What is the area of a regular size pancake?
c.
What percent is a regular pancake compared to a silver dollar pancake?
d.
What percent is a silver dollar pancake compared to a regular pancake?
e.
If six silver dollar pancakes are the same price as three regular pancakes, which is a better deal?