Question

Example 1. If the length, breadth and height of a room are
12 m, 20 m and 15 m respectively, then find
(i) lateral surface area
(ii) total surface area
(iii) volume
.

lsa

2(l+b)h=2(12+20)×15
=2×32×15=960m²

total surface area of room
=2(lb+bh+hl)

=2×(12×20+20×15+15×12)
=2×(240+300+180)
=2×720=1440m²

volume=
L×B×H

12×20×15 =3600m²​

Answer 1

Answer:

answer is 3600

Step-by-step explanation: