Question

aria patratului aflati masurile unghiurilor unui patrulater convex stiind ca sunt direct proportionale cu numerele . 3 5 10 12

Answer 1

a/3=b/5=c/10=d/12=k
⇒a=3k,b=5k, c=10k, d=12k
a+b+c+d=360
3k+5k+10k+12k=360
30k=360
k=360:30=12
a=3*12=36 grd
b=5*12=60 grd
c=10*12=120 grd
d=12*12=144 grd