Question

The area of the four walls in a room is 120 m 2 . The length is twice the breadth. If the height of the room is 4 m, find the area of the floor.
With Formula.
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Answer 1

Answer:

l=2b

h=4m

Area fof four walls A=2(l+b)h

⟹120=2×4(2b+b)

⟹b=5m

Area of floor=lb=2b.b=2b2=2×52

=50m2