Question

A cuboidal box of dimension 2m×3m×1.5m is to be painted except its bottom
Calculate how much area of the box has to be painted​

Answer 1

Answer:

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Step-by-step explanation:

Total surface area = 2[lb x bh + hl]

But bottom is not painted.

i.e. Area not painted = 1b

∴ Total S.A. to be painted = 2(bh + hl) + bh

= 2[(3 x 1.5) + (1.5x 2)] + (3 x 2) m2

= 2[(4.5) + (3)] + (6) m2

= 2[7.5] + 6 m2

= 15 + 6 m2

= 21 m2

Answer 2

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