The radii of two solid right circular cylinders are 6 cm and 4 cm respectively and their heights are (h+1) cm and (2h+1) cm respectively. If the areas of the whole surface of the two cylinders are equal, then the ratio of their volumes is:
Whole surface area of cylinder = 2πR(H+R) 2π x 6[h+1+6] = 2π x 4[2h+1+4] 6[h+7] = 4[2h+5] 6h+42 = 8h+20 2h = 22 h = 11 so, V1/V2 = (π x 62x (h+1))/(π x 42x (2h+1)) = (36 x (11+1))/(16 x (2x11+1)) = (36 x 12)/(16 x 23) = 27/23
Nidhi Sharma was born on April 04, 1995 and has secured 80% marks in the entrance examination. Her marks in graduation was 55% but she has secured 91% m...
Rajesh has obtained a letter from gram Pradhan. He has 5 acres of cultivable land. He was born of 10th January 1968. He doesn’t have an...
Ritika Ghosh was born on June 06, 1997. She has secured 78% and 52% marks in graduation and entrance examination respectively. She can pay Rs.1,00,000 a...
Abhishek Ghosh was born on June 03, 1991 and is a graduate with 86% marks. He has scored 61% marks in the entrance examination and 98 marks in the int...
Renu is a nurse with 60% marks in graduation and 75% in post graduation. She has been working as a nurse for last 3 years. She is not willing to sign th...
Prateek Asthana has secured 68% marks in graduation. He has scored 72% and 82% marks in the entrance examination and Interview respectively. He can pay ...
Alex has been working as faculty for the past 3 years. He has secured 75% in both graduation and post graduation. He has secured 53% in interview.
<...