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ICSE Class 9 Answered

How many tiles each of area 400 sq.cm will be needed to pave a foothpath which is 2m wide and surrounds a grass plot 25m long and 13m wide? (Pls show the calculations also)
Asked by anujbajpai44 | 19 Feb, 2018, 03:39: PM
answered-by-expert Expert Answer
begin mathsize 16px style Area space of space rectangular space plot equals 25 cross times 13 equals 325 space straight m squared Length space of space outside space rectangle equals 25 plus 2 plus 2 equals 29 space straight m Breadth space of space outside space rectangle equals 13 plus 2 plus 2 equals 17 space straight m Area space outside space rectangle equals 29 cross times 17 equals 493 space straight m squared Area space of space footpath equals 493 minus 325 equals 168 space straight m squared Tiles equals 400 space cm squared equals 0.04 space straight m squared Number space of space tile space required equals fraction numerator 168 over denominator 0.04 end fraction equals 4200 space tiles end style
Answered by Sneha shidid | 19 Feb, 2018, 04:42: PM

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