a solid metallic sphere of diameter v21cm is malted and recast into a number of smaller cones each of diameter 7cm and height 3cm find the number of cones formed
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Answer:
Volume of sphere= 4/3 ×pie×cube of radius
volume of cone =1/3×pie×sq radius ×height
Step-by-step explanation:
Volume of sphere = 9702 cu.cm
volume of cone = 38.5 cu.cm
number of cone = Volume of sphere/volume of cone
ANSWER IS : 252 CONES
Hope that it will help you
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2
Answer:
2646
Step-by-step explanation:
radius of the sphere (r) - 10.5 cm
radius of cone (R) - 3.5 cm
height of cone (h) - 3 cm
so,
volume of sphere = n× volume of cone
4/3πr³= 1/3πr²
4× 10.5×10.5×10.5= n×3.5×3.5
4×10.5×10.5×10.5/3.5×3.5=n
n=2646
hence, no. of cone formed are 2646
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