Intro to Area of a Circle

The space contained inside of a circle is called the...

• radius

• diameter

• circumference

• area

What is the value of the radius?

• 10

• 3.14

• 5

• 15

Tags

CCSS.7.G.B.4

What does this π mean?

• it's just the letter R

• pi = 3.14

• It's the letter R in cursive

• radius

Tags

CCSS.7.G.B.4

What is the formula to find the area of a circle? ​ (a)  

Tags

CCSS.7.G.B.4

Select the correct formula for finding area of a circle

• l x w

• b x h

Tags

CCSS.7.G.B.4

A baker is making a giant pizza with a diameter of 42 inches. a large jar of tomato sauce can cover 90 square inches of pizza. How many jars of tomato sauce does the baker need to buy to cover all the pizza?

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4

Match the following definitions to the terms:

• The distance around a circle

• Circumference of a circle

• square units (units²)

• Units of area

• How much space a circle takes up

• Area of a circle

• feet, cm, inches

• Units of circumference

Tags

CCSS.7.G.B.4

Select the correct formula for finding area of a circle

(a)  

• l x w

• b x h

Tags

CCSS.7.G.B.4

If you multiply π × r × r  then you will get the...

• radius

• diameter

• circumference

• area

Tags

CCSS.7.G.B.4

If you multiply π × r² then you will get the...

• Circumference

• Area

• Radius

• Diameter

Tags

CCSS.7.G.B.4