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Dane:
a = 2cm
b = 3cm
c = 5cm
Szukane:
P: ?
V: ?
Rozwiązanie:
P = 2 * (a * b) + 2 * (b * c) + 2 * (c * a)
P = 2 * (2 * 3) + 2 * (3 * 5) + 2 * (5 * 2) = 2 * 6 + 2 * 15 + 2 * 10 = 12 + 30 + 20 =
V = a * b * c
V = 2 * 3 * 5 = 6 * 5 =
2)
Dane:
a = 0,5dm = 5cm
b = 1dm = 10cm
c = 40cm
Szukane:
P: ?
V: ?
Rozwiązanie:
P = 2 * (a * b) + 2 * (b * c) + 2 * (c * a)
P = 2 * (5 * 10) + 2 * (10 * 40) + 2 * (40 * 5) = 2 * 50 + 2 * 400 + 2 * 200 = 100 + 800 + 400 =
V = a * b * c
V = 5 * 10 * 40 = 5 * 400 =