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CBSE Class 9 Answered

  Find the cost of painting an open rectangular tank of dimensions 4 m × 2.5 m × 5 m at the rate of Rs 5.50 per m2.
Asked by Topperlearning User | 23 Aug, 2017, 12:56: PM
answered-by-expert Expert Answer

Given: length (l) =4 m, breadth (b) =2.5 m and height (h)=5 m

Area of four walls and base

begin mathsize 12px style 2 open parentheses l plus straight b close parentheses straight h plus l straight b end style

Cost of painting 1 m2 = Rs 5.50

Therefore, cost of 75 m2 of sheet=Rs {75×5.50}

                                                            =Rs 412.50

Answered by | 23 Aug, 2017, 02:56: PM

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