Area and Circumference of Circles Challenge

The circular fountain in front of the library has a radius of 8.8 feet. What is the circumference of the fountain to the nearest tenth?

• 55.3 ft

• 26.4 ft

• 48.8 ft

• 27.6 ft

Tags

CCSS.7.G.B.4

If the word problem is asking you to find the space inside the circle, which formula should you use?

• r = d/2

• d = 2r

• C = πd

• A = πr²

Tags

CCSS.7.G.B.4

What is circumference?

• The distance around a circle.

• The space inside the circle.

• The length of the straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

• The line from the center of a circle to any point on its edge.

What is the area of a circle?

• The distance around a circle.

• The space inside the circle.

• The length of the straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

• The line from the center of a circle to any point on its edge.

The formula for finding the area of a circle is...

Tags

CCSS.7.G.B.4

What is the diameter of this circle?

• 8cm

• 16cm

• 10cm

• 4cm

Tags

CCSS.7.G.B.4

Find the circumference of the circle

• 87.82in

• 153.86in

• 43.96in

• 307.72in

Tags

CCSS.7.G.B.4

If my diameter is 19 inches, what is my radius?

• 38 inches

• 9.5 inches

• 59.66 inches

• 119.32 inches

Tags

CCSS.7.G.B.4

The radius of Michael’s basketball rim is 8 inches. What is the circumference to the nearest hundredth?

• 25.12 in

• 50.27 in

• 12.56 in

• 48.15 in

Tags

CCSS.7.G.B.4