Răspunsuri

2014-04-16T13:31:22+03:00
A=b=5k
c=6k

a+b+c=128
5k+5k+6k=128
16k=128
k=8

a=b=8*5
a=b=40
c=6*8
c=48

Aria= baza 8 inaltimea/2.

Intr-un triunghi isoscel inaltimea imparte baza in doua.
Deci stim ipotenuza=40,
O cateta=48:2=24, dar nu stim inaltimea. Aplicam pitagora

40^2=inaltimea^2+24^2
1600=inaltimea^2+576
inaltimea^2=1024
inaltimea=32

Aria=48*32/2
Aria=1536/2
Aria=768
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