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x² + 1,5²= 3²
x²= 9 + 2,25
x = √11,25 - wysokość trojkąta
Pp= (a * h) : 2 = ( 3 * √11,25) :2 = 1,5√11,25
V = 1,5√11,25 * 3 = 4,5√11,25
Ppb = 3 * 3 = 9