Question

The length, breadth and height of a rom are 5 m, 4m and 3 m respectively. Find the cost of white Washing the inner of the room and ceiling at the rate of ₹50 per Square Meter.



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Answer 1

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Answer 2

Answer:

your answer :

Dimensions of a room

length = 5M

breadth = 4M

height = 3M

Cost = ₹ 50/Sq. Meter

White washing area of a room = Area of four walls + Area of Ceiling of a room

$= 2(l + b)h + lb \\ \\ = 2(5 + 4)3 + 5 \times 4 \\ \\ = 2(9)3 + 20 \\ \\ = 18 \times 3 + 20 = 54 + 20 \\ \\ = 74sq.m \:$

1 Sq.m white washing cost = ₹ 50

74 Sq.m white washing cost = 74 × 50 = 3700

$TOTAL \: COST = \: rs \: 3700$