Multiple choice

The ratio of the radius and height of a cone is 5 : 12. Its volume is 314 2/7cm Its slant height is :

  1. 15 cm

  2. 2.5 cm

  3. 14 cm

  4. 13 cm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the radius and height be 5k and 12k. Using the volume 314 2/7 cm^3 gives k = 1, so the radius is 5 cm and the height is 12 cm. The slant height is sqrt(5^2 + 12^2) = 13 cm.

Keep practicing — related questions