CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

What's the cost of painting a box which is in the shape of a cuboid of dimensions 3 m×4 m×5 m at a rate of  5/m2?
  1.  470
  2.  300
  3.  900
  4.  1500


Solution

The correct option is A  470
We know that,
Surface area of cuboid 
=2(lb+bh+lh)

Given that,
dimension of the box
=3 m×4 m×5 m
cost of painting 
= 5/m2

Now,
Surface area of box
=2(3×4+4×5+5×3)
=94 m2

Cost of painting 
=Surface area of box×Cost of painting per m^2 area 
=94×5
= 470

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More



footer-image