Question

a building cast a shadow of 20 meter a time when a tree 6 meters high cast a shadow of length 8 meters. find the height of the building

Answer 1

$\huge\mathcal{\fcolorbox{lime}{black}{\pink{SOLUTION}}}$

Let x be the height of the building

Shadow of building and tree at a certain time is proportional to the original length

$: \implies \sf \frac{x}{20} = \frac{6}{8} \\ \\: \implies \sf 8x = 120 \\ \\: \implies \sf x = \frac{120}{8} \\ \\: \implies \boxed{\sf x = 15}$

$\green{ \underline{ \bf Height \: of \: the \: building \: is \: 15 \: m}}$

Answer 2

Answer:

I hope it will help you..