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Maths Exercices

Area of a rectangle

RectánguloA rectangle is a four-sided polygon with four right angles, whose opposite sides are parallel and are equal.

A rectangle is a particular sort of parallelogram, but can't say that all parallelograms would be rectangles, because a rectangle is a shape where opposites sides are parallel and all the corners are 90 degree angles. Some parallelograms would be rectangles, but not all.

Area of a rectangle

The area of a rectangle is the product of its width and length.

What is the area?

Find the base and height of the rectangle.

base: 14 km
height: 24 km

Use these numbers in the formula.

Area = base × height
= 14 × 24
= 336

Now find the units. The lengths are measured in kilometers, so the area is measured in square kilometers.

The area is 336 square kilometers.

What is the area when b=7, and h=5?