Math, asked by japreena, 9 months ago

The cost of painting a cubical box of side 3m at the rate of Rs.2 per sq.m is a) Rs. 120 b) Rs. 112 c) Rs . 108 d) Rs . 125

Answers

Answered by mathematicalcosmolog
5

Answer:

Your question is solved above

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Answered by apeksha160
0

Answer:

The cost of painting a cubical box of side 3m at the rate of

Rs.2 per sq. m is (c) Rs. 108

Step-by-step explanation:

Given,

The side of a cube = 3m

The cost of painting cube = Rs. 2/m²

We have to calculate the area of the cube that will be painted.

Formula for area of cube = 6a²

where a = side of the cube

Putting value of the side of the cube in the formula, we get

Area of cube = 6 (3)²

                      = 6 X 9

                      = 54 m²

The cost of painting 54m² of the cube at the rate of Rs. 2/m²

                      = 54 X 2

                      = Rs. 108

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