Circle Area and Circumference Review

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Tags

CCSS.HSG.C.A.2

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18
• 72
• 38
• 14

Tags

CCSS.7.G.B.4

Find the radius of a circle who's diameter is 40 ft.

• 40ft
• 80ft
• 20ft
• 45ft

Tags

CCSS.7.G.B.4

The diagram shows a circle with diameter 16cm. Find the circumference of this circle, correct to 1 decimal place.

• 201.1cm

• 50.2cm

• 804.2cm

• 25.1cm

Tags

CCSS.7.G.B.4

The radius of a circle is 5cm. Find the area of this circle, correct to 1 decimal place.

• 31.4cm²

• 314.1cm²

• 78.5cm²

• 15.7cm²

Tags

CCSS.7.G.B.4

The diameter of a circle is 2cm. Find the area of this circle, correct to 2 decimal places.

• 6.28cm²

• 3.14cm²

• 12.57cm²

• 15.7cm²

Tags

CCSS.7.G.B.4

The diameter of a circle is 2cm. Find the circumference of this circle, correct to 2 decimal places.

• 6.28cm

• 3.14cm

• 12.57cm

• 15.7cm

Tags

CCSS.7.G.B.4

Fill in the blank. The circumference of a circle is the ________.

• distance around it

• space inside it