Rectangle area Calculator

How to calculate rectangle area

This tool calculates rectangle area from Length, Width. Enter each quantity in its labelled field, then use the formula below to check the calculation.

Formula

length × width

Worked example

Length

8

Width

5

Applying the formula to these values gives 40 square units.

What should I check?

Find the area, perimeter, surface area or volume of common shapes. Use consistent length units: metres produce square metres for areas and cubic metres for volumes.

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