A = L*W + 2W*h + 2L*h.
A = 11*8 + 2(8*5) + 2(11*5) = 278 ft^2.
a classroom is 11m long and 8m wide and 5m height .find the sum of area of its floor and the four wall.
4 answers
U gave wrong answer
It is not ft it is meters
Given,
length = 11 m
breadth = 8 m
height = 5 m
We know,
Area of floor = Area of rect.
= l*b
= 11*8
= 88 m
Area of 4 walls = 2(l+b)h
= 2(11+8)*5
= 2 * 19 * 5
= 190 m²
length = 11 m
breadth = 8 m
height = 5 m
We know,
Area of floor = Area of rect.
= l*b
= 11*8
= 88 m
Area of 4 walls = 2(l+b)h
= 2(11+8)*5
= 2 * 19 * 5
= 190 m²
5 answers