Area and Circumference of Circles

Mandy’s circular garden has a radius of 1.5 ft. She wants to enclose the garden edging that costs £0.75 per foot. About how much will the edging cost? Use 3.14 for π!

• £9.42

• £7.07

• £3.53

• £4.71

Tags

CCSS.7.G.B.4

A ball has a circumference of 9.42 cm. What is the diameter?  Round to the nearest hundredth!

• 29.59 cm
• 4.71 cm
• 3 cm
• 18.84 cm

Tags

CCSS.7.G.B.4

 A glass stained window is shaped like a semicircle. The bottom edge of the window is 36 inches long. How much coloured glass would you need to cover the stained window? Round 2 dp.

• 1017.36 in²
• 508.68 in²
• 56.52 in
• 113.04 in

Tags

CCSS.7.G.B.4

Find the perimeter of the figure.  Use 3.14 for π!

• 20.57 in.
• 16 in.
• 28.57 in.
• 14.28 in.

Tags

CCSS.3.MD.D.8

What is the area of a quarter of a circle if the diameter is 14 cm?

• 12.25π cm²
• 49π cm²
• 14π cm²
• 3.5π cm²

Tags

CCSS.7.G.B.4

A circular swimming pool is 21 feet in diameter.
What is the distance around the edge of the pool? Round 2 dp.

• 32.99 ft
• 42 ft
• 65.97 ft
• 131.95 ft

Tags

CCSS.7.G.B.4

What is the area of this semi-circle? Round to 2dp.

• 50.27 cm²
• 100.53 cm²
• 201.06 cm²
• 25.13 cm²

Tags

CCSS.7.G.B.4

Daniel wants to buy cookies for her friend. The
radius of a cookie is 5 inches. What is the cookie’s 
circumference?

• 10 in
• 2.5 in
• 15.7 in
• 31.4 in 

Tags

CCSS.7.G.B.4

The London Eye has a diameter of 120 metres. If you are sitting in one of the capsules, about how far do you travel in one rotation of the Ferris wheel?

• 180 m

• ^{380 m}

• ^{11,300 m}

• 125 m

Tags

CCSS.7.G.B.4

The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy?

• 56.25 ft
• 246 ft
• 365 ft
• 393 ft

Tags

CCSS.7.G.B.4