Question

A cuboidal box of dimensions 1 × 2 × 1.5 is to be painted except its bottom. Calculate how
much area of the box has to be painted.

Answer 1

Answer:

11m² is to be painted

Explanation:

we know that total surface area of a cuboid is 2(lb+bh+lh).

It is given that bottom is not painted.

so area of bottom is l×b.

now let's subtract lb from the formula

we get,

lb+2bh+2lh.

=1x2+2x2x1.5+2x1x1.5

=11m².

Therefore,the area to be painted is 11m².

I hope my answer helped you..