A solid metallic sphere of diameter 21 cm is melted and recast into a number of smaller cones each of diameter 7 cm and height 3 cm find the height of cone so formed
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put, volume of sphere=volume of cone...
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Answer:
vol. of sphere =vol. of cone *n [ * = multiply]
n = no. of cones
4/3*22/7*21/2*21/2*21/2 =1/3*22/7*9*7 *n
11*21*21 = 22*3*n
4851= 66*n
4851/66 =n
73.5 =n
Step-by-step explanation:
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