(1) A rectangular room is 6 m long, 5 m wide and 4 m high. Find the total surface area of the four walls.
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Dimensions of the rectangular room=6m×5m×4m
where l=6m, b=5m and h=4m
Total Surface area of the four walls=Lateral surface area of the cuboid
⇒Total Surface area of the four walls=2(bh+lh)
=2h(b+l)
=2×4(5+6)
=88sq.m
∴Total Surface area of the four walls=88sq.m
HOPE IT HELPS ...
Answered by
1
Answer:
88
Explanation:
Use the formula 2h( b+ l )
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