Question

.The number of square tiles 3 inch long required to cover a rectangular floor

of 30 feet
× 40 feet is:

A. 28,800

B. 400

C. 4,800

D. 14,400

​

Answer 1

$14400$

hope it is helpful to you

(⌐■-■)

Answer 2

$\underline { \pink{ Dimensions \:of \: a \: rectangular \:floor:} }$

$Length (l) = 30 \:feet$

$= 30 \times 12 \: inches$

$= 360 \: inches$

$Breadth (b) = 40 \:feet$

$= 40 \times 12 \: inches$

$= 480 \: inches$

$\underline { \blue{ Dimensions \:of \: a \: square \:tile:}}$

$Length \: of \: square \: edge (a) = 3 \: inches$

$\red{ Let \: the \: number \: of \: square \:tiles }$

$\red{ required }\green { = n }$

$\red{n} = \frac{Area \:of \:the \: floor }{Area \: each \:tile }$

$= \frac{ l \times b }{ a^{2}}$

$= \frac{ 360 \times 480}{3^{2}}$

$= 40 \times 480$

$= 19200$

Therefore .,

$\red{ The \: number \: of \: square \:tiles }$

$\red{ required }\green { = 19200 }$

/* Options given are wrong */

•••♪