Hello from MrBillDoesMath!
Answer:
5. 113.0 ft^3
6. 149.8 cm^3
Discussion:
The volume of a sphere of radius r is
(4/3) Pi r^3.
5. Radius =3 =>
V = (4/3) Pi (3)^3
= (4*27/3) Pi
= 36 Pi
= 36 (3.14 ) approx
= 113.0 ft^3 to the nearest tenth
6. As shown the diameter = 13cm. As the radius is 1/2 the diameter
V = (4/3) Pi (13/2)^3
= (4/3) Pi ( 2197/8)
= (1/6) Pi ( 2197)
= (1/6) 3.14 (2197) approx
= 1149.8 cm^3 to the nearest tenth
Thank you,
MrB
