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r = r
t = 2r
Maka, berlaku:
s = √r²+t²
2√5 = √r² + (2r)²
2√5 = √r²+4r²
2√5 = √5r²
2√5 = r√5
r = 2
Maka, dengan r = 2, didapat t = 4
Menyebabkan:
V = 1/3 πr²t
V = 1/3 x 3,14 x 2² x 4
V = 1/3 x 3,14 x 4 x 4
V = 1/3 x 50,24
V = 16,746... cm³