Verified answer

1.) A cylindrical pencil holder, a diameter of 8 cm and 12 cm high. What is its volume?

Asked - What is the volume of the cylindrical pencil

holder.

Given - 8cm diameter and 12cm high

Formula - V= πr²h

Solution - V= πr²h

3.14×8²×12

3.14×64×12

3.14×768

V= 2,411.52cm³

Answer - The volume of the cylindrical pencil holder is

2,411.52cm³

2.) A spherical tank for water has a radius of 6 meters. About how many cubic meters of water can it hold?

Asked - About how many cubic meters of water can it

hold?

Given - a radius of 6 meters.

Formula - V= 4/3πr³

Solution - V= 4/3πr³

4/3×3.14×6³

4/3×3.14×216

4/3×678.24

V= 904.78m³

Answer - About 904.78m³of water can a spherical tank

for water can hold.

I hope this was able to help you.