The width of the given rectangle is 10 cm.
There are different types of quadrilaterals, for example, square, rectangle, rhombus, trapezoid, and parallelogram. Each type is defined accordingly to its length of sides and angles. For example, in a rectangle, the opposite sides are equal and parallel and their interior angles are equal to 90°.
The perimeter of a geometric figure is the sum of its sides. Thus, for a rectangle, the perimeter is 2L+2W.
For this question:
From the perimeter, you have the following equation:
P=2L+2W, as L=2W you will have:
P=2*(2W)+2W
P=4W+2W
P=6W
The question gives that the perimeter is 60cm. Therefore,
6W=60cm
W=10 cm
If W=10 cm, as L=2W, you have L=2*10=20 cm
Read more about the perimeter here:
brainly.com/question/24571594
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