Question

The perimeter and area of a rectangle with a length of 10 have the same numerical value. What is the width of the rectangle?

Answer 1

b=2.5

Explanation:

We know that,

Area of a rectangle= Length X Breadth

Perimeter of a rectangle= 2( Length + Breadth)

From the provided information we get that,

Area= Perimeter

lb=2(l+b)

Substituting l=10,

10b=2(10+b)

10b=20+2b

10b-2b=20

8b=20

b=20/8

b=2.5