Question

two poles of height 6m and 11m stand vertically on a plane. If the distance between their feet is 12 m find the distance between their tips

Answer 1

$\sqrt{15 \times 15 + 5 \times 5}$
=
$\sqrt{225 + 25}$
=
$\sqrt{250}$
$\sqrt{25 \times 10}$
=
$5 \sqrt{10}$