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Curved surface area = 1/3 × Total surface area 2πrh = 1/3 × 2πr(h + r) 3h = h + r 2h = r Total surface area ⇒ 2πr (h + r) = 1848 2 × 22/7 × 2h (h + 2h) = 1848 h (h+2h) = 147 h² + 2h² = 147 3h² = 147 h² = 49 h = 7 R = 14 Volume of cylinder = πr²h ⇒ 22/7 × 14 × 14 × 7 ⇒ 4312 cm³
Marks scored by A and B in a test are in the ratio 13:8 respectively. If B had scored 4 more marks, then marks scored by A would be 30% more than that o...
If x runs are second by Rohit, y runs by Shreyas and z runs by Virat, then x : y = y : z = 4 : 3. If total number of runs scored by Rohit, Shreyas and V...
Ratio of monthly income to monthly expenditure of A is 15:7, respectively and monthly savings of A is Rs. 2880. Find the monthly income of A.
The ratio of males and females in a zoo is 5:6 respectively and the percentage of children among males and the percentage of children among females are ...
Find the fourth proportion of 3, 7 and 15.
Marks scored by A and B in a test are in the ratio 13:9 respectively. If B had scored 8 more marks, then marks scored by A would be 30% more than that o...
P, Q and R together started a business. Six times the investment of P equals seven times the investment of Q and the capital of Q is twice that of R. Fi...
P, Q and R together started a business. Three times the investment of P equals five times the investment of Q and the capital of Q is twice that of R. F...
If A : B = 9:7 and A is 10 more than B then find the sum of A and B.
In 2020, the incomes of A and B were in the ratio 8:5, and their expenses were in the ratio 5:3. A’s savings in 2020 exceeded B’s savings by ₹5,00...
