Question

8. A floor which measures 15 mx 8 m is to be laid with tiles measuring 50 cm by 25 cm. Find the number
and the edges of the floor, what fraction of the floor is uncovered ?​

Answer 1

$\large \sf \pink {\underline{ƓƖƔЄƝ \: : - }}$

• ԼЄƝƓӇƬ ƠƑ ƬӇЄ ƑԼƠƠƦ = 15 M

• ƁƦЄƛƊƬӇ ƠƑ ƬӇЄ ƑԼƠƠƦ = 8 M

• ԼЄƝƓƬӇ ƠƑ ƬƖԼЄƧ = 50 ƇM

• ƁƦЄƛƊƬӇ ƠƑ ƬӇЄ ƬƖԼЄƧ = 25 ƇM

$\large \sf \green{ \underline{ƬƠ ƑƖƝƊ \: : - }}$

• ƝƲMƁЄƦ ƠƑ ƑԼƠƠƦ

• ЄƊƓЄ ƠƑ ƑԼƠƠƦ ƖƝ ƑƦƛƇƬƖƠƝƧ

$\large \sf \red{ \underline{ƧƠԼƲƬƖƠƝ \: : - }}$

ƛƦЄƛ ƠƑ ƑԼƠƠƦ = (ԼЄƝƓƬӇ ×ƁƦЄƛƊƬӇ)

ƛƦЄƛ ƠƑ ƑԼƠƠƦ = (15M×8M)

ƛƦЄƛ ƠƑ ƑԼƠƠƦ = 120 M²

ƝƠƜ,

ƤЄƦƖMЄƬЄƦ ƠƑ ƬƖԼЄ=2(ԼЄƝƓƬӇ+ƁƦЄƛƊƬӇ)

⫸2(50ƇM+25ƇM)

⫸2(75ƇM)

⫸1.5 M

ƬӇЄ ƝƲMƁЄƦ ƠƑ ƑԼƠƠƦ = 120M²

ƬӇЄ ЄƊƓЄ ƠƑ ƑԼƠƠƦ ƖƝ ƑƦƛƇƬƖƠƝƧ = 1.5M