A wooden toy is made by scooping out a hemisphere the diameter of the base of the cone is 6 cm and its height is 4cm.Find the cost of painting the toy at the rate of rs.5 per 1000 cm
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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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