Semi Circle and Circle

What is the area of this semi circle? 

• 100.5 square cm

• 25.1  square cm

• 50.3 square cm

• 12.6 square cm

What is the area of this circle?

• 6082.12 square feet

• 276.46 square feet

• 138.23 square feet

• 1520.53 square feet

Find the area of the penny

• 283.53  square mm

• 59.69  square mm

• 1134.11  square mm

• 90.25  square mm

What is the area of this circle?

• 1256.64

• 31.41

• 314.16

• 123.12

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

what is this shape called

• circle

• semi circle

• moon

• triangle

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

• 100.48 cm²

• 80 cm²

• 200.96 cm²

• 25.12 cm²

What is the area of this circle?

• 62.59

• 113.1

• 19.81

• 28.27

Find the area of the quarter circle. Round you answer to the nearest hundredth.

• 58.88

• 78.50

• 7.85

• 157.00

If two chords subtend equal angle at the centre then the chords are ______________

• Equal

• different