Fie a si b catetele si c ipotenuza.
a/b=3/4
a^2+b^2=6400
a/b=3/4=>b=(4/3)a
a^2+b^2=6400 devine:
a^2+(16/9)a^2=6400
(25/9)a^2=6400
a^2=6400x(9/25)
a^2=(6400x9)/25
"V"=radical
a=(80x3)/5=48cm
b=(4/3)a
b=(4/3)x48=64cm
Inaltimea "h" o determinam calculand aria "A" in doua feluri:
A=(c x h)/2
A=(a x b)/2
c x h = a x b
80h=48x64
h=(48x64)/80
h=192/5
h=38,4cm
