Arithmeticmedium · Past Paper
The ratio of the radii of two cylinders is 2:3 and the ratio of their heights is 5:4. Find the ratio of their volumes.
A5:9
B20:27
C4:9
D5:6
✓ Correct Answer: A — 5:9
Volume = pi * r^2 * h. Ratio = (r1^2 * h1) / (r2^2 * h2) = (2^2 * 5) / (3^2 * 4) = (4 * 5) / (9 * 4) = 5/9.
Share this question
More from Arithmetic
- What is 1% of 1000?
- The value of a car depreciates from Rs 500,000 to Rs 405,000 in 2 years. Find the annual rate of depreciation.
- If the profit is equal to 25% of the selling price, what is the profit percentage on cost price?
- A watch is sold for Rs. 440 at a profit of 10%. If it was sold for Rs. 380, find loss %.
- The ratio of two numbers is 3:4. If the LCM is 180, find the numbers.