Harshit painted the outer surface of a cuboidal box of dimensions 8m×7.5m×6 m. Find the surface area painted by him, if he did not paint the bottom of the box.
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Answer:
246 cubic m
Step-by-step explanation:
Given,
l = 8 m
b = 7.5 m
h = 6 m
Surface area of cuboid = 2 ( lb+bh+lh )
= 2 ( 8×7.5 + 7.5×6 +8×6 )
= 2× 153 = 306 cubic metre
If bottom is not painted = total area - bottom
=306 -( l*b)
= 306-60
= 246 cubic metre
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