Please help need help very quickly!

Question

1.) A cylinder has a diameter of 22 cm and a height of 9 cm. Identify the volume of the cylinder to the nearest tenth.

A.) V = 3799.2 cm³

B.) V = 4790.7 cm³

C.) V = 3421.2 cm³

D.) V = 1710.6 cm³

2.) A cylinder has a base area of 64π m^2. It’s height is equal to twice the radius. Identify the volume of the cylinder to the nearest tenth.

A.) V = 6434.0 m³

B.) V = 1402.1 m³

C.) V = 2804.2 m³

D.) V = 3217.0 m³

Need help very fast!

Answer 1

V=πr²h is the formula

Plug in the values you know. If the diameter is 22 cm, the radius is half of that. r=11 cm

V=π (11)²(9) =

C.) V = 3421.2 cm³

64π m² = πr²

r=8

Since h is twice that, h=16

V=64π(16) =

D.) V = 3217.0 m³