Question

If the perimetre of a rectangular room of 5 metres high is 26 metres, what will be the area of four wallsof the room?

Answer 1

p=26
h=5
b=2x(b+5)=26
2b+10=26
2b=26-10
2b=16
b=16÷2
b= 8
so we got the breadth , now area of 1 wall=
=bxl
=8x5
=40
area of 4 wall is equal to
=40x4
=160