Question

the perimeter of a floor of rectangular room is 18m and height is 3.5 find the area of four walls​

Answer 1

Answer:

perimeter =2(l+b)=18 m

height=3.5 m

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

=hx2(l+b)

=(3.5 x 18)m²=63 m²

Answer 2

perimeter =2(l+b)=18 m

height=3.5 m

area of the four walls-curved surface area=2h(l+b)

=hx2(l+b)

=(3.5 x 18)m²-63 m²