Prosze na dziś. :-)Oblicz jeden bok trapezu.Dane:P = 20b = 5 h = 3 całe i 1/3
(a+b)*h/2 = 20 ----> korzystamy ze wzoru na trapez
(a+b)*h/2 = 20 / *2
h(a+5) = 40
10/3(a+5) = 40 / *3
10a + 50 = 120
10a = 70
a=7
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(a+b)*h/2 = 20 ----> korzystamy ze wzoru na trapez
(a+b)*h/2 = 20 / *2
h(a+5) = 40
10/3(a+5) = 40 / *3
10a + 50 = 120
10a = 70
a=7