Perimeter and Area of Semicircles

Find the area of this Semicircle with a diameter of 18 cm

• 254.34 cm

• 127.17 cm

• 56.52 cm

• 28.26 cm

Find the perimeter of the semicircular. Round your answer to the nearest hundredth.

• 23.13 m

• 28.26 m

• 14.13 m

• 56.52 m

what is the area of this semicircle ?
d = 8 cm 

• 100.48 cm²

• 80 cm²

• 200.96 cm²

• 25.12 cm²

A _____ is half of a circle.

• circumference

• pi

• semicircle

• composite figure

What is the distance around the semicircle? (Use 3.14 = π and round to the nearest tenths place)

• 18.5

• 11.3

• 20.3

• 22.6

The Lees had a new concrete patio installed in the shape of a semicircle as shown. Mr. Lee wants to cover the patio with concrete sealer. What is the area he will need to cover with the sealer? Round to the nearest hundredth.

Tags

CCSS.Math.Content.7.G.B.4

The diameter of the semicircle is 8 cm. Find the perimeter.

• 25.12 cm

• 33.12 cm

• 20.56 cm

• 100.48 cm

The image shows two semicircles.  Find the area of the shaded region. Use 3.14 for π. 

• 42.39 sq. cm

• 113.04 sq. cm

• 169.56 sq. cm

• 83.98 sq. cm

what is the area of this semicircle ? d = 8 cm

you have to do an extra step at the end

• 100.48 cm²

• 80 cm²

• 200.96 cm²

• 25.12 cm²

Mrs. Wilson placed the welcome mat shown below on her front door step. What is the PERIMETER of her welcome mat in feet? Round to the nearest hundredth. Don't forget to label.