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33+41 = 74
74-52= 22
22:2 = 11 - type m przekatna |BD|
w 3 mass
p trojkata= 1/2 a *h
p= 1/2 * 6 *5
p= 3*5
p= 15 j2
p2= 1/2a*h
p2= 1/2 * 6*4
p2= 3*4
p2-= 12 j2
pc= 12 + 15
pc = 27 j2
a 5 tp chyba c ale nie jt pewna