150

25

10

15

16π

36π

144π

4π

196π

49π

14π

7π

225 sq in

4 sq in

9 sq in

100 sq in

30 sq in

36 sq in

81 sq in

144 sq in

25.7 in

31.4 in

44.3 in

88.5 in

38.6 in

62.1 in

88.4 in

1120.5 in

36 sq ft

144 sq ft

243 sq ft

486 sq ft

100 sq ft

150 sq ft

18,281.25 sq ft

150,000 sq ft

36π cu cm

108π cu cm

54π cu cm

18π cu cm

πR²

π(R - 3)²

$$\pi R^2\ -\ \pi\times3^2$$

$$\pi R^2\ -\ \pi\left(R\ -\ 3\right)^2$$