a = ?
b = 4
h = 5
38-4-5-13 =16
a = 16
P = 1/2(16 + 4) * 5 = 50
obliczamy dłuższą podstawę
38cm-4cm-5cm-13cm=16cm
P=(a+b)*h:2
P=(4cm+16cm)*5:2
P=20cm*5cm:2
P=100cm²:2
P=50cm²
pole trapezu wynosi 50cm²
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a = ?
b = 4
h = 5
38-4-5-13 =16
a = 16
P = 1/2(16 + 4) * 5 = 50
obliczamy dłuższą podstawę
38cm-4cm-5cm-13cm=16cm
P=(a+b)*h:2
P=(4cm+16cm)*5:2
P=20cm*5cm:2
P=100cm²:2
P=50cm²
pole trapezu wynosi 50cm²