Question

1)

Which choice could you use to find the volume of the given sphere? (π = 3.14)
A) V = 4(3.14)(4.5)3
B) V = 4/3(3.14)(4.5)2
C) V = 4/3(3.14)(4.5)3
D) V = (3.14)(4.5)3
2)
Determine the volume of the given sphere. (nearest tenth)
A) 91.1 cubic units
B) 286.1 cubic units
C) 381.5 cubic units
D) 401.6 cubic units

Answer 1

Explanation:

(1) The radius of sphere is 4.5 units.

The volume of volume of sphere is given by :

`V=(4)/(3)\pi r^3`

`\pi=3.14\ , r=4.5`

So,

`V=(4)/(3)* 3.14* (4.5)^3`

Option C is correct.

(2) If we solve the plugged values, then we get :

`V=(4)/(3)* 3.14* (4.5)^3`

`V=381.5\ \text{units}^3`

Option C is correct.