Question

find the surface of four walls of a room(assume thatthere are no doors and windows) if its length 12m., breadth 10m. and height 7.5m.

Answer 1

lateral surface area of cuboid=2(l+b)h
=2×(12+10)×7.5
=2×22×7.5
=330m^2


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Answer 2

$\boxed{HEYAMATEYY!!!}$

S.A of four walls of the room = 2h(l+b)

⇒ given that

length = 12m

breadth = 10m

height = 7.5m

⇒ 2 × 7.5 (12+10)

= 15 × 22

= 330m²

$\small{Wishithelps!!!}$