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Aditya Prasad from Notre Dame , Gumla

Subject :IMO Class : Class 9

A spherical ball of lead, 3 cm in diameter is melted and recast into three spherical balls. The diameter of two of these are
1.5 cm and 2 cm respectively. The diameter of the third ball is ______.

A 2.66 cm
B 2.5 cm
C 3 cm
D 3.5 cm

please give me a solution...

View All Answers (5)

Ans 1:

Rudra kumar from Jawahar Navodaya vidyalaya, Sherghati

Class : Class 9

4/3π{3}^3=4/3π{1.5^3+2^3+x^3} 27=3.375+8+x^3 15.625=x^3 X=2.5 Correct option is B

Ans 2:

Kenil Vrajeshkumar Gandhi from ,

Class : Class 1

Ans 3:

Nagala from Velammal theni , Theni

Class : Class 9

The answer is 2.5

Ans 4:

Kenil Vrajeshkumar Gandhi from ,

Class : Class 1

Ans 5:

PRABHANSHU PATHAK from D.A.V. PUBLIC SCHOOL, SINGRAULI

Class : Class 7