2.how many tiles whose length and width are 13cm and 7cm respectively are needed to cover a rectangular region who's the length and the width are 520cm and 140 cm

Step-by-step explanation:

800 tiles

Step-by-step explanation:

Area of the tiles = Length × Breadth

= 13 × 7

= 91 cm²

Area of the rectangular region = Length × Breadth

= 520 × 140

= 72800 cm²

Therefore the number of tiles needed to cover the rectangular region

= Area of the rectangular region ÷ Area of the tiles

= 72800 cm² ÷ 91 cm²

= 800 tiles

Hope it helps

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Hope it helps

Step-by-step explanation:

Area of tile => L=13cm B=7 A=l*b 13*7 =91cm^2 Area of plot => L=520vm B=140cm A=l*b 520*140 = 72800cm^2 No of tiles to fit = area if plot /area of tile 72800/91 =800

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a 10 percent increase