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hp = 9cm
L = 4a
4a = 32 // :4
a = 8 cm
Pc = Pp + Pb
Pc = a² + 4a*hp/2
Pc = 8² + 4 * 8 * 9/2
Pc = 64 + 32 * 9 /2
Pc = 64 + 288 /2
Pc = 64 + 144
Pc = 208cm²
Odp: Pole powierzchni całkowitej wynosi 208cm².