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Easy

Question

# A box is in the form of a cube with an edge 8 cm long, find the cost of a painting outside the box and on all the surfaces at the rate of Rs 7 per m^{2}.

- 2688
- 4688
- 2644
- 4624

Hint:

### Total Surface Area(TSA) of cube = 6a2

where, a is side of cube

## The correct answer is: 2688

### For finding the cost of painting outside the box we have to first find the total surface area of the cube given,

TSA of the given cube = 6a^{2}

= 6 (8)^{2}

= 6(64)

= 384

The cost of painting outside the box = (TSA)(7)

= (384)(7)

= 2688

Therefore the cost of painting outside the box is Rs.2688

Therefore, the correct option is a)2688.

^{2}

The cost of painting outside the box = (TSA)(7)

Therefore the cost of painting outside the box is Rs.2688

Therefore, the correct option is a)2688.

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