Respuesta :
Answer: 24times
Step-by-step explanation:
Formula for the volume of a cylinder             = πr²h
Volume of the cone                            = 1/3πr²h
Therefore the volume of the cylinder        = 22/7 x 10² x 20
                                   = 22/7 x 10 x 10 x 20
                                         = 6285.71cm³
Therefore , the volume of the cone       = 1/3 x 22/7 x 5² x 10
                                   = 1/3 x 22/7 x 5 x 5 10
                                          = 5500/21
                                          = 261.9cm³
Therefore the number of times needed to use the completely filled cone to completely filled the cylinder with water                                                            = 6285.71/261.9
                                         = 24times.
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