Question

Kerucut
V=462cm
t=9cm
Phi=22/7
Diameternya???

Answer 1

Dik :
V = 462 cm
t = 9 cm
ditanya D ?

maka :
Volume = 1/3 x πr² x t
462     = 1/3 x 22/7 r² x 9
462    = 9,42 r²
r²        = 49
r          = 7

maka d = 7 x 2 = 14 cm

Answer 2

V = 1/3 * 22/7 * r^2 *T
462 = 1/3 * 22/7 * r^2 * 9
462 = 22/7 * r^2 * 3
r^2 = (462 : 66) * 7
r^2 = 7 * 7
r = √49
r = 7