R=15
1/4x 2πR= 30/4π = 7,5π
2πR = 7,5/:π
2r = 7,5/:2
r=3,75
πr
Pc= 0.25 x π225 + 14,0625π = 56,25π + 14,0625π = 70,3125π
x kwadrat = 3,75 kwadrat = 15 kwadrat
x kwadrat = 210
x = pierwiastek z 210
V stożka = 1/3 PpH
V= 1/3 x 14,0625π x pierwiastek z 210
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R=15
1/4x 2πR= 30/4π = 7,5π
2πR = 7,5/:π
2r = 7,5/:2
r=3,75
πr
Pc= 0.25 x π225 + 14,0625π = 56,25π + 14,0625π = 70,3125π
x kwadrat = 3,75 kwadrat = 15 kwadrat
x kwadrat = 210
x = pierwiastek z 210
V stożka = 1/3 PpH
V= 1/3 x 14,0625π x pierwiastek z 210