Question

Two poles of 10 m and 15 m stand upright on a plane ground.If the distance between there top is 13m.Find the distance between there feet

Answer 1

yeah considering the difference between two poles which is 5
so now
let us consider
distance between the top of two poles = hypotunese=13
height will be 5
applying pythogorus theorem
let base be X
$x ^{2} + 5 ^{2} = {13}^{2} \\ {x}^{2} = 169 - 25 \\ x ^{2} = 144 \\ x = 12$

which gives base ie the separation as 12m

Answer 2

See the figure care fully i cut CD at E such that ED become equal to AB then join AtoE  now CE become 5 m AC given as distance at top 3m .now applying( Pythagoras theorem), we get answer 4m