Area of Circles and Composite Area

What is the area of semi-circle with a radius of 10 cm?

• 39.3 sq. cm

• 157 sq. cm

• 62.8 sq. cm

• 31.4 sq cm

Tags

CCSS.7.G.B.4

The Cruz family is buying a custom-made cover for their swimming pool, shown above. The cover costs $2.95 per square foot. How much will the cover cost? Round to the nearest cent.

• $422.10

• $551.63

• $1,627.29

• $1,106.25

What is the area of the shaded region?

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Find the area of the shaded reagion.

Find the area of the composite figure.

• 100

• 178.5

• 139.25

• 175

What is the area of this circle?

• 82.13

• 78.5

• 314.16

• 170.12

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 18

• 10

• 9

• 8

Tags

CCSS.7.G.B.4

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

• 11.32 ft

• 12.25 ft

• 10.99 ft

• 8.75 ft

Tags

CCSS.7.G.B.4

What is the area of the composite figure?

• 40 cm²

• 65.5 cm²

• 52.5 cm²

• 25 cm²

What is the area of the yellow?

• 78.5 mi²

• 19.625 mi²

• 39.25 mi²

• 31.4 mi²

Tags

CCSS.HSG.C.B.5