Question

Mayank has 32 wooden blocks of size 2cm × 1 cm × 1 cm. His father told him to assemble all the blocks on the table and paint the exposed faces. What is the minimum of the painting as the cost is Rs 5.25 per sq. cm.

Answer 1

Answer:

Here is your answer mate

Step-by-step explanation:

See, it is clear that the blocks are cuboidal in shape with dimensions 2cm×1cm×1cm.

Now,

If you will keep those blocks on the table then only its 4 faces and the top face would be exposed. And, mayank has to paint only the exposed faces.

So, it means that the base of the block is not to be painted.okay¡

So we will use here the formula of lateral surface area of the cuboid to find the area of 1 block.

So,

Lateral surface area={2(l+b)×h}units sq.

={2(2+1)×1}cm sq.

=(2×3×1)cm sq.

= 6cm sq.

Now area of 32 blocks =(32×6)cm sq.

=192cm sq.

And now rate of painting= rs 5.25

Cost of painting=rs(5.25×192)=rs1008

Plzzzz mark me as the BRAINLIEST

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