The perimeter of the floor of a hall is $400 m$ . If the height is $6 m$ , find the cost of painting the four walls at the rate of $R s .10$ per square metre.

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Solution

Given perimeter of the floor is $400 m$
Height of the walls is $6 m$
Area of the four walls is $p e r i m e t e r \times h e i g h t = 400 \times 6 = 2400 m$
Cost of painting per square metre is $R s .10$
So Cost of painting the four walls is $10 \times 2400 = R s .24, 000$

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The perimeter of the floor of a hall is 400m. If the height is 6m, find the cost of painting the four walls at the rate of Rs.10 per square metre.

Given perimeter of the floor is 400 mHeight of the walls is 6 mArea of the four walls is perimeter×height=400×6=2400 mCost of painting per square metre is Rs.10So Cost of painting the four walls is 10×2400=Rs.24,000

The perimeter of the floor of a hall is $400 m$ . If the height is $6 m$ , find the cost of painting the four walls at the rate of $R s .10$ per square metre.

Given perimeter of the floor is $400 m$
Height of the walls is $6 m$
Area of the four walls is $p e r i m e t e r \times h e i g h t = 400 \times 6 = 2400 m$
Cost of painting per square metre is $R s .10$
So Cost of painting the four walls is $10 \times 2400 = R s .24, 000$