a toy is in the form of cone of radius 3.5 mounted on a hemisphere of same rdius. the total height of toy is 15.5.find the total surface are of toy
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d of sphere is 21cm
r of sphere is 10.5cm
r of cone is 3.5cm
h of cone is 3cm
no. of cones = v of sphere / v of cone
no.of cones = 4/3 pi r cube/1/3 pi r square h
=> 4/3 *22/7 *10.5 *10.5 *10.5 = 1/3 *22/7 *3.5 *3.5 *3
=> 4851 cm cube = 38.5 cm cube
no of cones = 4851 cm cube / 38.5 cm cube
no of cones =126 ans..
r of sphere is 10.5cm
r of cone is 3.5cm
h of cone is 3cm
no. of cones = v of sphere / v of cone
no.of cones = 4/3 pi r cube/1/3 pi r square h
=> 4/3 *22/7 *10.5 *10.5 *10.5 = 1/3 *22/7 *3.5 *3.5 *3
=> 4851 cm cube = 38.5 cm cube
no of cones = 4851 cm cube / 38.5 cm cube
no of cones =126 ans..
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