Question
A cone and a hemisphere have the same base radius and
the same height. If the total volume of both is 2,160 cm³, find the radius.Solution
Volume of cone = (1/3)πr²h Volume of hemisphere = (2/3)πr³ Total volume = (1/3)πr²h + (2/3)πr³ = 2160 Since base radius and height are the same, let h = r. (1/3)πr³ + (2/3)πr³ = 2160 (1/3 + 2/3)πr³ = 2160 πr³ = 2160 r³ = 2160 / π = 2160 / 3.14 ≈ 687.58 r ≈ 8.8 cm Correct Option: a) 8.8 cm
Who lives immediately above the floor on which Usha lives?
What is the age of the person who works for Hdfc?
How many persons visits after the one who visits Mumbai?
Who among the following likes Montblanc?
Who among the following person lives immediate above flat of G?
Who among the following person lives in flat 2 of floor 4?
There are six teachers in school, viz. Bhanu, Raghav, Abdul, Shekhar, Kunal and Devesh. Since a ch of the there is no games teacher in the school, each...
How many persons live between E and D?
Who among the Following has Yellow colour?
Who among the following got the lowest marks?
