Question

Calculati lungimea catetei unui triunghi dreptungich stiind ca are aria de 42 dm si lungimea celeilalte catete de 7 dm.

Answer 1

$aria = \frac{c1*c2}{2}$
$42 dm patrati= \frac{c1*7dm}{2}$
$6dm=\frac{c1}{2}$
c1=6·2
c1=12

Answer 2

Lungimea celeilalte catete este 12 dm.
A=C1xC2 supra 2
A= 7x12 supra 2
A= 42 dm.