Finding Area of Semi Circles

what is the formula for finding the area of a semi-circle

• A = π r²

• C = π r²

• A = π r² / 2

• A = 2 π r

Tags

CCSS.7.G.B.4

What is the area of this semi circle? 

• 100.5 square cm

• 25.1  square cm

• 50.3 square cm

• 12.6 square cm

Tags

CCSS.7.G.B.4

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

• 100.48 cm²

• 80 cm²

• 200.96 cm²

• 25.12 cm²

Tags

CCSS.7.G.B.4

Mrs. Wilson placed the welcome mat shown below on her front door step. What is the area of her welcome mat in square feet? Leave in terms of π.

• 2π

• 8π

• 10π

• 4π

Tags

CCSS.7.G.B.4

what is the formula for finding the area of a semi-circle

• A = π r²

• C = π r²

• A = 1/2 π r²

• A = 2 π r

• A = 2π r²

Tags

CCSS.7.G.B.4

Mrs. Wilson placed the welcome mat shown below on her front door step. What is the area of her welcome mat in square feet?

• A = 25.12 sq. inches

• A = 50.24 sq. inches

• A = 31.4 sq. inches

• A = 12.56 sq. inches

Tags

CCSS.7.G.B.4

A semi-circle is half of a circle. How should the Area formula be changed so that it gives you the Area of a Semi-Circle?

Tags

CCSS.7.G.B.4

What is the area of this composite shape? (Use 3.14 = π and round to the nearest tenths place)

• 21

• 19.2

• 40.2

• 42

Find the area of the semicircle. Round you answer to the nearest hundredth.

• 19.63

• 9.8125

• 9.81

• 39.25

Tags

CCSS.7.G.B.4