How to Find the Volume of a Cylinder | CXC Math Made Easy

If cylinder questions confuse you, don’t worry! Today we’ll solve a simple CXC-style math question step by step in the easiest way possible.

Question

A water storage tank is shaped like a cylinder.

• Radius = 4 cm

• Height = 15 cm

Find the volume of the cylinder.

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Step 1: Write the Formula

The formula for the volume of a cylinder is:

genui{"math_block_widget_always_prefetch_v4":{"content":"V=\pi r^2 h"}}

Where:

• V = Volume

• r = Radius

• h = Height

• π (pi) ≈ 3.14

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Step 2: Put the Numbers Into the Formula

We know:

• Radius = 4 cm

• Height = 15 cm

So:

V=\pi(4)^2(15)

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Step 3: Square the Radius

Remember:

• (4^2 = 4 \times 4 = 16)

Now the equation becomes:

V=\pi(16)(15)

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Step 4: Multiply

16 × 15 = 240

So:

V=240\pi

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Final Answer

The volume of the cylinder is:

(240\pi \text{ cm}^3)

Approximate answer using π ≈ 3.14:

240 × 3.14 = 753.6 cm³

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Quick Tips for Cylinder Questions

• Radius is HALF the diameter

• Always write the formula first

• Don’t forget to square the radius

• Include units in your final answer

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