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h - wysokość graniastosłupa = 7 cm
Pp - pole podstawy = a² = 5² = 25 cm²
Pb - pole powierzchni bocznej = 4a * h = 4 * 5 * 7 = 140 cm²
Pc - pole powierzchni całkowitej = 2 * Pp + Pb = 2 * 25 cm² + 140 cm² =
= 50 cm² + 140 cm² = 190 cm²
V - objętośc graniastosłupa = Pp * h = 25 cm² * 7 cm = 175 cm³