Answer:
b=2.5
Step-by-step 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
