Question

Ek belnaakaar bartan Jiski trijya 16 cm Hai Me 30 cm ki unchai tak pani se Bhara h. is bartan Mein Lohe Ka Gola Dal Diya Jata Hai jisse bartan Mein Pani Ka tal 9CM Upar uth Jata Hai Gole ki trijya gyat Karen​

Answer 1

Question :--- we have to find radius of sphere ..

गोला गिरने के बाद पानी 9cm upper aa gya hai ,

Matlab jitni gole ki volume thi, utna he बढ़ा ll

so , comparing volume of rising part ,

we know that ,

volume of cone = 1/3 πr²h

volume of sphere = 4/3 πr³

so,

1/3 π * 16² * 9 = 4/3 π * r³

64 * 9 = r³

r = 4(3)^1/3 (Ans)