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Pc = 6 * a² = 180
a²= 30
a = √30
2.
H = a = 2
r = a = 2
V = π*r²*H = π*4*2 = 8π
3.
V = 4/3 *π*r³ = 36π
r³ = 27
r = 3
4.
r = ½*a = 4
l = a = 8
Pb = π*r*l = π * 4 * 8 = 32π
Pole powierzchni całkowitej sześcianu wynosi 180 cm2.
6a²=180
a²=30
a=√30
ad.2
V=πr²h
r=2
h=2
V=π2²*2=8π
Zad.3
V=36πcm³
(4πr³):3=36π
4πr³=108π /:4π
r³=27
r=3cm
Zad.4
P=πrl
r=4
l=8
P=4*8π=32π