Zad. 1. odp. A.
Zad. 2.
a) 8 dm³
b) 63 cm³
Zad. 3. odp. A.
Zad. 4.
Pc = 2(ab + bc + ac)
Pc = 2 * (5 * 3 + 3 * 20 + 5 * 20)
Pc = 2 * (15 + 60 + 100)
Pc = 2 * 175
Pc = 350 dm²
Zad. 5.
1 dm * 4 + 25 mm * 4 + 4 cm * 4 = 4 dm + 100 mm + 16 cm = 40 cm + 1 cm + 16 cm = 57 cm
Zad. 6.
Pc = 6a²
294 = 6a² / : 6
a² = 49
a = √49
a = 7
V = a³
V = 7³
V = 343 dm³
