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CBSE Class 9 Answered

 the length of a wall is 8 m  and  height is 4m. Wall is 38 CM thick. there is one door of size to 2m× 1 m and two Windows each of side 1.2 m × 1 m find the expenditure  of making wall at the rate of Rs 1500 per km
Asked by rahulmeena612000 | 19 Nov, 2018, 05:42: PM
answered-by-expert Expert Answer
Rs. 1500 per km ! . I assume it is Rs.1500 per cubic metre
 
actual volume = volume of the wall - volume of door - volume of windows = 8×4×.38 - 2×1×.38 - 2×(1.2×1×.38) = 10.488 cubic metre
 
Cost of making wall = 10.488×1500 = Rs. 15732
Answered by Thiyagarajan K | 21 Nov, 2018, 10:14: PM

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