Question

A solid cone of height 9 cm diameter of its base eating cm is cut out from a wooden solid sphere of radius 9 cm the percentage of food wastage is

Answer 1

Step-by-step explanation:

hieght of cone is 9cm

radius of cone is 9cm

therefore volume of cone will be=1/3πr²h

                                             =π3 x 9 x 9

                                             =243π

now volume of sphere is =4/3πr³

                                    =4/3π9 x 9 x 9=972π

therefore volume of wood left=972π-243π=729π

therefore percentage of wood waste=729π/972π x 100

                                              = 75%