Question

Rajat wants to cover the window space of his room if the window is 150cm long and 250 cm high and 20cm thick and each brick is measures 25cm by12cm by 10cm then find number of bricks required for the space?

Answer 1

$\underline { \pink { Dimensions \:of \:a \:window: }}$

$Length (L) = 150 \:cm , \\Thickness (B) = 20 \:cm \\Height (H) = 150\:cm$

$\underline { \blue { Dimensions \:of \:each \:Brick: }}$

$Length (l) = 25 \:cm , \\Thickness (b) = 12\:cm \\Height (h) = 10\:cm$

$\red{ Let \:number \:of \:bricks \: required = n}$

$n = \frac{ Volume \:of \: a \: window }{ Volume \:of \:each \: brick }\\= \frac{ L\times B \times H }{ l\times b \times h} \\= \frac{150\times 20 \times 250}{ 25 \times 12 \times 10}\\= 250$

Therefore.,

$\red{Number \:of \:bricks \: required}\green { = 250}$

•••♪