Oblicz pole trapezu o podstawie a i b oraz wysokości h jeśli a) a = 8cm ,b = 7cm i h = 4cm b) a = 9cm , b = 4cm i h = 10cm
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P=(8cm+7cm)4 dzielone na 2 =30
p=(9cm+4cm) 10cm dzielon na 2 =130
a wynosi 28 cm wynosi b 15 cm