Question

The volume of a cylinder is 90 cm3. If the radius is 3 cm, what is the height of the cylinder?

(A) 15 cm
(B) 5cm
(C) 30 cm
(D) 10 cm

Answer 1

10 cm

Explanation:

Data :

Volume = V = 90π cm³

Radius = r = 3cm

Area = A = π(3)²

Formula for volume is

V = πr² h

Solve for height h

h = V/(πr²)

h = 90π / π3² = 90π /9π

h = 10 cmData :

Volume = V = 90π cm³

Radius = r = 3cm

Area = A = π(3)²

Formula for volume is

V = πr² h

Solve for height h

h = V/(πr²)

h = 90π / π3² = 90π /9π

h = 10 cmData :

Volume = V = 90π cm³

Radius = r = 3cm

Area = A = π(3)²

Formula for volume is

V = πr² h

Solve for height h

h = V/(πr²)

h = 90π / π3² = 90π /9π

h = 10 cmv