# Truncated cone

Calculate the height of the rotating truncated cone with volume V = 1115 cm3 and a base radii r1 = 7.9 cm and r2 = 9.7 cm.

Correct result:

h =  4.57 cm

#### Solution: We would be pleased if you find an error in the word problem, spelling mistakes, or inaccuracies and send it to us. Thank you!  Math student
can u explain why you do (r2 + rxR + R2) in the first step

1 year ago  3 Likes Dr Math Kukoslav
but to prove formula, you need to know how to solve integral Kukoslav
need to solve a cubic equation, as obtained above, to find rises in heights... integral Tips to related online calculators
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