3/15- Quizizz- Circles

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

what is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Tags

CCSS.7.G.B.4

A Circle has a diameter of 10 centimeters.  What is the area of the circle? (Best Choice)

• 5π or about 15.7 cm²
• 10π or about 31.4 cm²
• 25π or about 78.5 cm²
• 100π or about 314 cm² 

Tags

CCSS.7.G.B.4

A Circle has a radius of 6 inches.  What is the circumference of the circle? (Best Choice)

• 3π or about 9.42 in
• 6π or about 18.84 in
• 12π or about 37.68 in
• 36π or about 113.04 in 

Tags

CCSS.7.G.B.4

A Circle has a radius of 4.  What is the circumference of the circle? (Best Choice)

• 4π or about 12.56
• 16π or about 50.24
• 2π or about 6.28
• 8π or about 25.12

Tags

CCSS.7.G.B.4

Find the exact circumference of a circle with diameter of 20 inches.

• 40 π in

• 100 π in

• 10 π in

• 20 π in

Tags

CCSS.7.G.B.4

Given the circumference of a circle is 16 π cm, what is the radius?

• 8 cm

• 16 cm

• 8 π cm

• 4 cm

Tags

CCSS.7.G.B.4

Find the exact circumference of a circle with radius of 9 inches.

• 9 π in

• 18 π in

• 81 π in

• 36 π in

Tags

CCSS.7.G.B.4

Find the exact area of a circle with radius of 9 inches.

• 9 π in²

• 18 π in²

• 81 π in²

• 36 π in²

Tags

CCSS.7.G.B.4