Odpowiedź:
a - krawędź podstawy = 3 cm
H - wysokość graniastosłupa = 7 cm
Pp - pole podstawy = 3a²√3/2 = 3 * 3² cm² * √3/2 = 3 * 9√3/2 cm² =
= 27√3/2 cm²
Pb - pole boczne = 6a * H = 6 * 3 cm * 7 cm = 126 cm²
Pc - pole całkowite = 2 * Pp + Pb = 2 * 27√3/2 cm² + 126 cm² =
= 27√2 cm² + 126 cm² = 3(9√3 + 42) cm²
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Odpowiedź:
a - krawędź podstawy = 3 cm
H - wysokość graniastosłupa = 7 cm
Pp - pole podstawy = 3a²√3/2 = 3 * 3² cm² * √3/2 = 3 * 9√3/2 cm² =
= 27√3/2 cm²
Pb - pole boczne = 6a * H = 6 * 3 cm * 7 cm = 126 cm²
Pc - pole całkowite = 2 * Pp + Pb = 2 * 27√3/2 cm² + 126 cm² =
= 27√2 cm² + 126 cm² = 3(9√3 + 42) cm²