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Volume of sphere = Volume of cone (4/3)πr³ = (1/3)πR²H (4/3) × π × 7³ = (1/3) × π × R² × 28 4 × 343 = 28R² R² = 49 R = 7 cm Correct option: a
In a village with a population of 8,500 people, 80% of them are adults. Among these adults, only 75% possess a ration card. Furthermore, 60% of the rati...
An initial investment grows to four times its original amount in 6 years under compound interest. How many years will it take for the investment to grow...
Three numbers are given, where one-third of the first number, two-fifths of the second number, and three-fourths of the third number are all equal. The ...
The total of the cost price and the marked price of article 'A' is Rs. 42,000, while the sum of its marked price and selling price amounts to Rs. 36,000...
Find the value of ‘x’ if x% of 600 + {1440 ÷ x of 16} × 8 = 156
Vikas invested Rs. 12,000 at an annual compound interest rate of 30%, with the interest being compounded every 10 months. How much interest did Vikas ea...
A school bag is sold for Rs.360 after giving two successive discounts of 10% and 20%. If school bag is marked up by Rs.280 above its cost price, then fi...
Three positive numbers are in the ratio 2:3:4. The sum of their squares is 2349. The average of the largest and the second largest number is:
A sphere of radius 21 cm is melted and recast to form ‘n’ numbers of smaller cuboids of dimension 21 cm × 11 cm × 7 cm. Find the value of ‘n’.
A man is 60% more efficient than a boy. Together, two boys and one man can finish a task in 15 days. How many boys would be needed to complete the same ...
