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2014-07-16T16:43:46+03:00
A) A=(C1*C2)/2=(AB*AC)/2=4*6/2=12 cm^2
b)Aplicam teorema lui Pitagora adica AC^2=BC^2-AB^2
AC^2=25-9
AC^2=16 =>AC=4 cm
A=(AB*AC)/2=(3*4)/2=6 cm^2
c)Aplicam teorema lui Pitagora adica AC^2=BC^2-AB^2
AC^2=169-25
AC^2=144 =>AC=12 m
A=(AB*AC)/2=(5*12)/2=30 m^2

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