Question

How many tiles with 13 cm length and 7 cm of breath are needed to cover a rectangular region whose length is 520 cm and breath 140 cm?

Answer 1

$\huge\mathbb{\underline{SOLUTION:-}}$

$\sf\underline{\blue{\:\:\:\:\:\:\:\:\:\:\:\:\:Given:-\:\:\:\:\:\:\:\:\:\:\:\:}}$

$\sf\bullet Dimensions\:of\: tiles=13\times 7\\ \\ \sf\bullet Dimensions\:of\: rectangular\: region=520\times 140$

Formula used

$\underline{\bigstar{\sf{Area\:of\: rectangle=length\times breadth}}}$

$\sf\underline{\red{\:\:\:\:\:\:\:\:\:\:\:\:\:A.T.Q:-\:\:\:\:\:\:\:\:\:\:\:\:}}$

$\sf\implies Area\:of\:tiles=13\times 7\\ \\ \sf\implies Area=91cm$

And now the Area of region/plot

$\sf\implies Area\:of\:plot=530\times 140\\ \\ \sf\implies Area\:of\:plot=72800cm{}^{2}$

$\boxed{\sf{\dag{\:\: required\:tiles=\dfrac{Area\:of\:plot}{Area\:of\:tiles}}}}$

$\sf\implies No.\:of\: tiles=\cancel{\dfrac{72800}{91}}\\ \\ \sf\implies Tiles\: required=800$

$\underline{\dag{\sf{Required\:Tiles=800}}}$

Answer 2

Answer:

Step-by-step explanation:

Given :-

Length of tiles = 5.2m = 520 cm

Breadth of tiles = 1.4 m = 140 cm

To Find :-

Number of tiles

Solution :-

Area of plot = l × b

Area of plot = 520 × 140

Area of plot = 72800 cm²

Area of tiles = 13 × 7

Area of tiles = 91 cm²

Number of tiles required = Area of room/Area of tiles

Number of tiles required = 72800/91

Number of tiles required = 800

Hence, 800 tiles are required to cover the room.