The ratio of heights of 2 cones is 3 : 4 and the ratio of radius of 2 cones is 5 : 6. Find the ratio of volumes of 2 cones.
The ratio of heights of 2 cones is 3 : 4 and the ratio of radius of 2 cones is 5 : 6. Find the ratio of volumes of 2 cones.
A75/144
B75/72
C72/75
D144/75
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correct answer is: 75/144
Explanation: The volume of a cone is proportional to the square of the radius and the height. Given the ratios of heights (3:4) and radii (5:6), the volume ratio is calculated as (5²/6²) * (3/4) = (25/36)*(3/4) = 75/144.
- OPTION a (75/144): Correct, as shown by the calculation.
- OPTION b (75/72): Incorrect, as it doesn't match the calculated ratio.
- OPTION c (72/75): Incorrect, inverse of the correct ratio.
- OPTION d (144/75): Incorrect, inverse of the correct ratio.
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