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a - krawędź podstawy = 3
h - wysokość = 4
Pp - pole podstawy = a² = 3² = 9
V - objętość = 1/3 * Pp * h = 1/3 * 9 * 4 = 12
b)
a - krawędź podstawy = 4
h - wysokość = 5
Pp = a²√3/4 = 4²√3/4 = 16√3/4 = 4√3
V = 1/3 * Pp * h = 1/3 * 4√3 * 5 = 20√3/3
c)
a - krawędź podstawy = 2
h - wysokość = 3
Pp = 3a²√3/2 = 3 * 2²√3/2 = 3 * 4√3/2 = 12√3/2 = 6√3
V = 1/3 * Pp * h = 1/3 * 6√3 * 3 = 6√3