Question
A water tank is shaped like a right circular cylinder with
a height of 10 cm and a base radius of 2.8 cm. What is its volume? (Use π = 22/7)Solution
ATQ,
Volume of right circular cylinder = π × radius² × height
= (22/7) × (2.8)² × 10
= (22/7) × 7.84 × 10
= (22 × 7.84 × 10) / 7
= (1724.8) / 7
= 246.4 cm³
- Which of the following numbers is not a perfect square?
A lending library has a fixed charge for the first 7 days and an additional charge for each day thereafter. Sahil paid Rs . 215 for a book kept for 15 ...
- A number exceeds 40 times its reciprocal by 7/8. Determine the number.
Find the greatest 4‑digit number which is exactly divisible by 12, 15 and 20.
In a two digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between...
- Find the median of the following observations:
120, 125, 115, 130, 140, 135, 145 - Find the smallest number that is divisible by 14, 28, and 42.
Determine the highest possible value of (x + y) if the number '3x725y4' is divisible by 12.
Find the least number to be added to 1500 to make it a perfect square.
If y = 5, then what is the value of 10y