Question

a metallic sphere of radius 10.5cm is melted and then recast into small cones each cone radius 3.5cm and height 3cm .Find how may cones are obtained?

Answer 1

your answer is 126 cm

Answer 2

Answer:

126 cones

Step-by-step explanation:

volume of sphere = 4/3 πr³

                             = 4/3 × 22/7 × (10.5)³

                             = 4851 cm³

now, volume of a cone = 1/3 πr²h

                                      = 1/3 × 22/7 × (3.5)² × 3

                                      = 38.48 cm³

no. of cones obtained =  4851/38.48

                                     = 126.06

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