The length of the rectangle is 4 dm and the width is twice as long. Find the perimeter and area of the rectangle.

Knowing the length of the specified shape, subtract its width:

1) 4 dm * 2 = 8 decimetres – width.

Having learned the width, we can find out the perimeter, denoting it with the letter P.

The perimeter is the sum of all four sides of the shape. Let’s find it:

P = 4 dm + 4 dm + 8 dm + 8 dm = 8 dm + 16 dm = 24 dm.

Or, the second way to find the perimeter:

P = 4 dm * 2 + 8 dm * 2 = 24 dm.

Area is one side of a rectangle multiplied by the other side. We recognize the area by designating it with the letter S:

S = 4 dm * 8 dm = 32 dm2.