Question
The volume of cone is 4752 cm3. If its height
is 3.5 cm then find the radius of the cone.Solution
Let the radius of the cone be ‘r’ cm Therefore, (1/3) × (22/7) × r2 × 3.5 = 4752 Or, r2 = 4752 × (7/11) = 1296 Or, r = 36 (since, radius cannot be negative) Therefore, radius of the cone = 36 cm
Sum of all positive integers from 1 to 100 is
Find the unit digit of the expression: 3! + 4! + 5! + 6! + ........ + 1111!.
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What is the smallest number that should be added to 673 so that the sum becomes exactly divisible by 9?
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Rs 720 is to be divided among P, Q and R so that P gets 3/5 of Q’s share and R gets 1/3 of P’s share. Share of R is:
Find the greatest 4-digit number which is exactly divisible by 12, 15 and 21.
103² + 75² - 25² =?
The cube of the difference between two given natural numbers is 1000, while the product of these two given numbers is 56. Find the positive difference b...
The sum of two numbers is 18 while the sum of their squares is 164. Find the sum of the cubes of those two numbers.
