Question

The perimeter , P cm, of a rectangle of

length L cm and breadth B cm is given
by P = 2L +2B. Given that P = 20 and
B = 5, find the value of L​

Answer 1

Answer:5cm

Explanation:

P= 2L+2B

P=20cm

B=5cm

L=?

P= 2(L+B)

P/2=L+B

20/2= L+5

10=L+5

L=10-5

L=5cm