the perimeter of a floor of a room is 30 M and its height is 3 M find the area of four walls of the room ?
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Answered by
32
perimeter = 2(l+b)
30 = 2(l+b)
l+b = 15
h = 3
area of 4 walls = 2(l+b)×h
= 2(15)×3
= 90cm^2
hope it helped you a lot
please mark it as the brainliest answer
30 = 2(l+b)
l+b = 15
h = 3
area of 4 walls = 2(l+b)×h
= 2(15)×3
= 90cm^2
hope it helped you a lot
please mark it as the brainliest answer
Answered by
5
Answer:
Answer is 90 m^2
Step-by-step explanation:
Perimeter of rectangle = 2( l + b ) = 30 m
Height = 3 m
Surface area of walls = 2 ( l+ b) h
= 30 ×3 = 90 m^2
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