Question

ABCD DREPTUNGHI
AB=60 cm
BD=75 cm
Afla d(A,BD)

Answer 1

Fietr ABD=> conf th pitagora AD²=BD²-AB²=> AD²=5624-3600=2025 => AD=45. Aria ABD= c1*c2/2=45*60/2=1350. Dar aria tr ABD=b*h/2=> 1350=BD*AM/2 ( AM este perpendiculara pe BD iar M apartine lui BD) =< 1350=75*AM/2 => AM=1350*2/75=36=> d(A;BD)=36