Răspunsuri

2014-11-19T13:59:52+02:00
Aria=(Ipotenuza×inaltime):2 fiind triunghi dreptunghic si isoscel => inaltimea=ipotenuza:2 Inaltimea=20 Aria=(40×20):2 Aria=400
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2014-11-19T13:59:54+02:00
Conform teoremei lui pitagora c1²+c2²=i² dar cum avem triunghi dreptunghic isoscel atunci c1=c2 deci 2c1²=i² adica c1²=i²:2

A=c1*c2/2=c1²/2=i²:2/2=40:2/2;20/2=10
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