Question

Find the number of tiles required to cover a square floor of side 70m. if the length of each tiles is 7m . Find the cost of these rules at Rs. 30 per tile.


answer with explanation​

Answer 1

Answer:

$100$

Step-by-step explanation:

$area \: of \: floor = (70 \times 70) {m}^{2} \\ = 4900 {m}^{2} \\ area \: of \: one \: tiles = (7 \times 7){m}^{2} \\ = 49{m}^{2} \\ number \: of \: tiles \: required \: to \: \\ cover \: the \:floor = \\ \frac{area \: of \: floor \: }{area \: of \: one \: tiles} \\ = \frac{4900}{49} \\ = 100(ans)$