Question

the perimeter of a rectangle is 20cm and its width is 5cm the length will be​

Answer 1

Answer:

perimeter of a rectangle is 20cm

width or breadth is 5cm

2(l+b)=20

l+b=10

l+5=10

l=5cm

Answer 2

Answer:

Let L = x

B = 5 cm

2(L + B ) = 2( x+ 5) = 20

2x + 10 = 20

2x= 20-10

2x = 10

x = 10/2= 5