the perimeter of a floor of a room os 30m and it's height is 3m.Find the area of four walls of the room
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Answer:
90 m^2
Step-by-step explanation :
given : perimeter of floor = 30
=> 2(l+b) = 30
=> l+b = 15 ------(1)
we know that height of the room is 3m
area of four walls = 2h (l + b )
= 2(3) (15) [from ----(1)]
= 6*15
=90m^2
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