7l = 7dm³
a = 50cm = 5dm
b = 20cm = 2dm
h = x
V = a * b * x
7 = 5 * 2 * x
7 = 10 * x
x = 7 : 10
x = 0,7dm = 7cm -------- odpowiedź
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7l = 7dm³
a = 50cm = 5dm
b = 20cm = 2dm
h = x
V = a * b * x
7 = 5 * 2 * x
7 = 10 * x
x = 7 : 10
x = 0,7dm = 7cm -------- odpowiedź