Question

The side of a square wall is 3m 50 cm. Determine the cost of colour washing it at the rate of Rs. 2 per sq.m.
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Answer 1

Answer:

24.50

Step-by-step explanation:

Dimensions of the well in m

3.5 m

Area of wall is 3.5 x 3.5 m2 =  12.25 m2

Cost at Rs 2 per sq m = 12.25 x 2 = 24.50

Answer 2

Answer:

24.50

Step-by-step explanation:

There are 4 steps in this answer.

1/4. Colour Washing have to be done in wall, i.e, in area.

2/4. Area of the square = side x side

                                     = 3 m 50 cm x 3 m 50 cm

                                     = 12 m 25 sq.cm

3/4. Rate of colour washing per sq. m = ₹2

4/4. Cost of colour washing for entire wall = 12 m 25 sq.cm x ₹2

                                                                      = ₹24.50

Therefore, cost of colour washing for entire wall is ₹24.50