Area and Circumference of Circles and Arcs

What is the area of the shaded region? Round to the nearest hundredth.

• 26

• 452.39

• 113.10

• 40715.04

Find the length of the bold arc.

• 61.3ft

• 20.4ft

• 7351.3ft

• 22,068ft

find the area of the circle below.

• 100 cm

• 225 cm

• 9 cm

• 28.27 cm

Find the circumference of the circle.

• 113.04

• 1017.36

• 254.34

• 56.55

If the area of a circle is four times larger than the circumference of that same circle, what is the diameter of the circle?

Meg swam from one side of her circular pool to the other side going through the center. If Meg swam 8 feet, what is the approximate circumference of Meg's pool?

• 16 feet

• 25.13 feet

• 251.2 feet

• 4 feet

When she is outdoors, Tasha, the dog, is tied to a stake in the center of a circular area of radius 24 feet. The angle between her dog house and her favorite hydrant is 165 degrees.  What is the length of the arc from her dog house to the hydrant, following minor arc DG, to the nearest foot.

• 40

• 35

• 55

• 69

Find the circumference of a circle with a radius of 12.5 mm .

• 37.68mm

• 18.84mm

• 78.5mm

• none of the above

Danielle wants to make a cookies for 3 friends. The radius of a cookie is 5 inches. If she wants to ice ALL 3 of the cookies, how many square inches of cookies must she cover with icing?

• 47.1 in²

• 235.5 in²

• 78.5 in²

• 15.7 in² 

A circle has a circumference of 36π meters. What is the radius of the circle?

• 36 meters

• 6 meters

• 12 meters

• 18 meters