Question

(1) A rectangular room is 6 m long, 5 m wide and 4 m high. Find the total surface area of the four walls.​

Answer 1

ANSWER

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 ...

Answer 2

Answer:

88

Explanation:

Use the formula 2h( b+ l )