Question

if the perimeter of a rectangle is 20 cm , find the length of the rectangle if it's breadth is 5 cm
need a step-by-step explanation​

Answer 1

Answer:

Perimeter of a rectangle = 2(l+b)

p = 20 , b = 5 , l = ?

20 = 2(l+5)

20/2 = l+5 (Transposing)

10 = L+5

10 -5 = l

5 = Length

Answer 2

Answer:

L = B = 5 cm

Step-by-step explanation:

Given:

perimeter of a rectangle is 20 cm

Perimeter = 2(L + B)

Here, length = ?

Breadth = 5 cm

2(L + B) = 20

L + B = 10

L + 5 = 10

L = 5