Question

find the area of four walls of a room if it's length 12,breadth 10m and height 7.5

Answer 1

formula = 2(l+b)*h
2(12+10)*7.5
2(22)*7.5
44*7.5
330m3

Answer 2

LSA of cuboid =2h(l+b)
=2×7.5(12+10)
=15×22
=330