Question

The measurements of a room are 12cm ,4cm,3cm find the area of the four walls of the room

Answer 1

LSA of cuboid = 2×lb + 2×bh + 2×hl

Given,
l=12 cm
b=4 cm
h=3cm

therefore, LSA=2×(12×4)+2×(4×3)+2×(3×12)
= 96+24+72
=192 cm^2