Area and Circumference Problems

If you have the circumference of a circle is 149 ft., what is the radius of that circle?

• 47.45 ft

• 23.7 ft.

• 74.5 ft.

• None of the above

A circular mirror has a 2 inch frame around it. The mirror itself is 8 inches in diameter. What is the area of the frame? Use 3.14 for pi.

Calculate the shade portion of the figure. Use 3.14 for pi.

Find the area of the circle below. Use 3.14 for pi.

Calculate the area of the semi-circle. Use 3.14 for pi.

What is the area of the shaded section of the figure below?

A circular flower bed 5 yards in diameter is created in the middle of a rectangular lawn area measuring 15 yards by 8 yards. What is the area of the lawn that is left?

Use 3.14 for pi.

Olivia ordered a 12" cookie cake for her birthday. She requested the icing to have a sun covering the center and be 8" in diameter. How much of Olivia's cookie cate wasn't covered by icing?

• 81 in²

• 29.8 in2

• 59.7 in2

• 283.4 in2

Caedyen has trained his puppy, Chase, to jump through a ring. According to Caedyen's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference rounded to the nearest whole number (use 3.14 for pi)?

• 10 ft

• 12 ft

• 11 ft

• 21 ft