10.0 Circles

Find the area of the circle, giving your answer to 1 decimal place.

• 3.1cm²

• 12.6cm²

• 6.3cm²

• 50.3cm²

Find the area of the circle, giving your answer to 1 decimal place.

• 113.1cm²

• 28.3cm²

• 6.3cm²

• 37.7cm²

Find the area of the circle, giving your answer to 1 decimal place.

• 154.0cm²

• 38.5cm²

• 38.4cm²

• 153.9cm²

A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 50.27 m²

Mr. Smith wants to cover his circular pool. If the pool has a diameter of 13 feet how much fabric would he need to cover the pool? (round to the nearest whole number)

• 41 ft²

• 133 ft²

• 250 ft²

• 531 ft²

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

• A = πr
• A = 2πr
• A = πd
• A = πr²

Determine the radius of the penny

• 59.66 mm
• 9.5 mm
• 38 mm
• 119.32 mm

Find the diameter 
C=12π

• 12
• 24
• 6
• 144

Find the radius 
C=6π

• 6
• 3
• 36
• 18.8

Match the following

• Longest chord in the circle, passing through the center.

• Line segment with both end points on the circumference.

• Chord

• Line segment with one end point in the center of the circle and the other on the circumference.

• Radius

• The distance around the circle.

• Diameter

• Formula to find the area of a circle.

• Circumference