Math, asked by souravdey4375, 1 year ago

A plot has a concrete path within its borders on all sides having the uniform width of 4m. The plot is rectangular with sides 20m and 15m. The charge of removing concrete is Rs. 6 per sq.m. How much is spent in removing all the concrete?

Answers

Answered by harshagrhari121
2
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Answered by throwdolbeau
6

Answer:

Total cost of removing concrete = Rs. 1296

Step-by-step explanation:

Concrete Area = Total Area - Non-Concrete Area

Subtracting width of the path from all the sides we get,

Length = 20 - 4 - 4

            = 12 m

Breadth = 15 - 4 - 4

              = 7 m

∴ Concrete Area = (20 × 15) - (12 × 7)

                         = 300 - 84

                         = 216 square meters

Total cost of removing concrete = Rate × Area

                                                       = 6 × 216

                                                      = Rs. 1296

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