Area of Circles Practice

What is the radius of this circle?

• 18
• 10
• 9
• 8

Tags

CCSS.7.G.B.4

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

What is the formula for circumference of a circle?

• C = π(1/2 d)²

• C = 2πr

• C = 2πd

• C = πr²

Tags

CCSS.7.G.B.4

What does area mean?

• the distance around a shape
• half the distance around a shape
• the amount of space outside a shape
• the amount of space inside a shape

What is the formula for area of a circle given the radius?

• A = πr
• A = 2πr
• A = πd
• A = πr²

Tags

CCSS.7.G.B.4

Find the area of the circle.

Hint:     $A\ =\ \pi r^2$  
 
Use 3.14 for π   

• 6082.12

• 1519.76

• 1893.14

• 1292.92

Tags

CCSS.7.G.B.4

What is the area of this circle?

Hint:     $A\ =\ \pi r^2$   

Use 3.14 for  $\pi$  and divide diameter, divide by 2. 

 

• 163.2

• 15.3

• 124.2

• 113.04

Tags

CCSS.7.G.B.4

The diameter of the face-off circle on an ice-hockey rink is 30 feet. Find its area.

• 675.6 ft²
• 29.67 ft²
• 545.8 ft²
• 706.5 ft²

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 40.82 cm²

• 81.64 cm²

• 530.66 cm²

• 2122.64 cm²

Tags

CCSS.7.G.B.4

what is the area of this semicircle ?
d = 8 cm 

• 100.48 cm²
• 80 cm²
• 200.96 cm²
• 25.12 cm²

Tags

CCSS.7.G.B.4