Question

The perimeter of the floor of a room is( 2 x + 10) meters .If the height of it is( x + 2)meters then the area of four walls of the room is ​

Answer 1

Answer:

(2x+4)(x+5)

Step-by-step explanation:

given:2(l+b)=2(x+5)

(l+b)=(x+5)

h=(x+2)

area of four walls=2h(l+b)

=2(x+2)(x+5)

=(2x+4)(x+5)

=2x2+10x+4x+20

=2x2+14x+20

=2x2+10X=4x+20

=2x(x+5)+4(x+5)

=(2x+4)(x+5)

HOPE IT HELPS YOU