Answer:
10) 500/3 π [166 ⅔ π] ≈ 523.6 in
11) 1372/3 π [457 ⅓ π] ≈ 1436.8 ft
12) 972 π ≈ 3053.6 mm
13) 288 π ≈ 904.8 yd
14) 36 π ≈ 113.1 cm
15) 10976/3 π [3658 ⅔ π] ≈ 11494.0 m
16) 9 mm
17) 1.5 cm
18) ³√(135/π) ft ≈ 3.5 ft
Explanation:
⅓ = 0.3333333......
Sphere volume = 4/3πr³.
Where r is the radius of the sphere.
The diameter is 2 times the radius.
π can be approximated at 3.14 or a close fraction 22/7.