karan has a vessel, of the form of an inverted cone, open at the top, of height 11cm and radius of top as 2.5cm and is full of water. Metallic spherical balls each of diameter 0.5cm are put in the vessel.
due to which 2/5th of the water in the vessel flows out. Find how many balls were put in the vessel.
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Answer:
CSA OF CONE-PIE * R *L
L²= √H² PLUS √R²
L= 11.28CM
surface area of a cone = 22/7* 2.5( 2.5 plus 11)
30.6 cm²
SUREFACE area of sphere- 4 pie r²
4* 22/7 * 25/10*25/10= 78.57cm²
Step-by-step explanation:no of sperical balls =
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