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s = akar dari r^2 + t^2
r x r = (v x 3) / (phi x t)
r = tinggal diakarin hasil r x r
d = tinggal kali 2 r nya
s²=r²+t²
r²=s²-t²
t²=s²-r²
VK=⅓πr²t
d=r×2
LSK=πrs