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13 votes
13 votes
Help me with math please

A cone has a slant height of 15 cm and a height of 12 cm.
What is the radius of the cone?

cm.
What is the volume of the cone?

cubic centimeters.

User Vinie
by
2.6k points

1 Answer

19 votes
19 votes

Answer:

The answer to your question is 9 cm

Explanation:

Data

slant height = 15 cm

height = 12 cm

radius = ?

Process

To solve this problem, use the Pythagorean theorem. The slant height is the hypotenuse, the height is the long leg and the radius is the short leg.

c² = a² + b²

slant height² = height² + radius²

-Solve for radius

radius² = slant height² - height²

-Substitution

radius² = 15² - 12²

-Simplification

radius² = 225 - 144

radius² = 81

-Result

radius = 9 cm

User Masoud Gheisari
by
3.3k points
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