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Area of a rectangle A 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=5, and h=2? 