Question

Find the internal surface area of a room whose dimensions are 4m×2.5m×6m

Answer 1

Step-by-step explanation:

Internal surface is nothing but the total surface area

All the dimensions are different

Therefore, It is obvious that the figure is nothing but the 'CUBOID'

. '. total surface area of cuboid =2[lb+bh+hl]

= 2[(4*2.5)+(2.5*6)+(6*4)]

.'. =2 [10+15+24]

. '. = 2*49

. '. =98

.'. The internal surface are of the room is 98cm.sq.