Pregunta
Find the volume of a right circular cone that has a height of 6.5 cm and a base with a radius of 8.5 cm . Round your answer to the nearest tenth of a cubic centimeter. Answer Attempt 1 out of 2
Ask by Mejia Burgess. in the United States
Jan 24,2025
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The volume of the cone is approximately 491.8 cubic centimeters.
Solución
To find the volume of a right circular cone, we can use the formula:
\[ V = \frac{1}{3} \pi r^2 h \]
where:
- \( V \) is the volume of the cone,
- \( r \) is the radius of the base of the cone,
- \( h \) is the height of the cone.
Given:
- Height of the cone, \( h = 6.5 \) cm,
- Radius of the base of the cone, \( r = 8.5 \) cm.
Substitute the given values into the formula:
\[ V = \frac{1}{3} \pi (8.5)^2 (6.5) \]
Now, we can calculate the volume of the cone.
Calculate the value by following steps:
- step0: Calculate:
\(\frac{1}{3}\pi \times 8.5^{2}\times 6.5\)
- step1: Convert the expressions:
\(\frac{1}{3}\pi \left(\frac{17}{2}\right)^{2}\times 6.5\)
- step2: Multiply the terms:
\(\frac{13}{6}\pi \left(\frac{17}{2}\right)^{2}\)
- step3: Multiply:
\(\frac{13\pi }{6}\left(\frac{17}{2}\right)^{2}\)
- step4: Evaluate the power:
\(\frac{13\pi }{6}\times \frac{17^{2}}{2^{2}}\)
- step5: Multiply the fractions:
\(\frac{13\pi \times 17^{2}}{6\times 2^{2}}\)
- step6: Multiply:
\(\frac{3757\pi }{24}\)
The volume of the right circular cone is approximately 491.79015 cubic centimeters.
Rounded to the nearest tenth of a cubic centimeter, the volume of the cone is approximately 491.8 cubic centimeters.
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Extra Insights
To find the volume of a right circular cone, you can use the formula: V = (1/3)πr²h, where r is the radius and h is the height. Plugging in the values: V = (1/3)π(8.5 cm)²(6.5 cm) V ≈ (1/3)π(72.25 cm²)(6.5 cm) V ≈ (1/3)π(469.625 cm³) V ≈ (156.5417 cm³)π V ≈ 492.8 cm³ (after calculating π ≈ 3.14) So, the volume of the cone is approximately 492.8 cm³ when rounded to the nearest tenth.
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