Question 1188242


let the height of a tree be {{{h}}}

with horizontal surface, stake and tree with shades form two similar right triangles whose sides are proportional

so, {{{h/1m=52m/6.5m}}}
{{{h/1m=52/6.5}}}
{{{h/1m=8}}}
{{{h=8*1m}}}
{{{h=8m}}}

the height of a tree is {{{8m}}}