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What is the diameter of a hemisphere with a volume of \( 8582 \mathrm{~m}^{3} \), to the nearest tenth of a meter?

Ask by Munoz Bird. in the United States
Feb 20,2025

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Answer

The diameter of the hemisphere is approximately 32.0 meters.

Solution

To find the diameter of a hemisphere given its volume, we can use the formula for the volume of a hemisphere: \[ V = \frac{2}{3} \pi r^3 \] where \( V \) is the volume and \( r \) is the radius. We can rearrange this formula to solve for the radius \( r \): \[ r^3 = \frac{3V}{2\pi} \] Once we find the radius, we can calculate the diameter \( d \) using the formula: \[ d = 2r \] Now, let's substitute the given volume \( V = 8582 \, \mathrm{m}^3 \) into the equation and calculate the radius. Then, we will find the diameter. First, we will calculate \( r^3 \): \[ r^3 = \frac{3 \times 8582}{2\pi} \] Now, let's perform the calculation. Calculate the value by following steps: - step0: Calculate: \(\frac{\left(3\times 8582\right)}{2\pi }\) - step1: Remove the parentheses: \(\frac{3\times 8582}{2\pi }\) - step2: Multiply the numbers: \(\frac{25746}{2\pi }\) - step3: Reduce the fraction: \(\frac{12873}{\pi }\) Calculate or simplify the expression \( 4097.603165^{1/3} \). Calculate the value by following steps: - step0: Calculate: \(4097.603165^{\frac{1}{3}}\) - step1: Convert the expressions: \(\left(\frac{819520633}{200000}\right)^{\frac{1}{3}}\) - step2: Use the properties of exponents: \(\frac{819520633^{\frac{1}{3}}}{200000^{\frac{1}{3}}}\) - step3: Rewrite the expression: \(\frac{\sqrt[3]{819520633}}{20\sqrt[3]{25}}\) - step4: Multiply by the Conjugate: \(\frac{\sqrt[3]{819520633}\times \sqrt[3]{25^{2}}}{20\sqrt[3]{25}\times \sqrt[3]{25^{2}}}\) - step5: Simplify: \(\frac{\sqrt[3]{819520633}\times 5\sqrt[3]{5}}{20\sqrt[3]{25}\times \sqrt[3]{25^{2}}}\) - step6: Multiply the numbers: \(\frac{5\sqrt[3]{4097603165}}{20\sqrt[3]{25}\times \sqrt[3]{25^{2}}}\) - step7: Multiply the numbers: \(\frac{5\sqrt[3]{4097603165}}{500}\) - step8: Reduce the fraction: \(\frac{\sqrt[3]{4097603165}}{100}\) Calculate or simplify the expression \( 2 * 16.002087 \). Calculate the value by following steps: - step0: Calculate: \(2\times 16.002087\) - step1: Multiply the numbers: \(32.004174\) We have calculated the radius \( r \) of the hemisphere as approximately \( 16.0 \, \mathrm{m} \). Now, we can find the diameter \( d \): \[ d = 2r \approx 2 \times 16.0 \approx 32.0 \, \mathrm{m} \] Thus, the diameter of the hemisphere, to the nearest tenth of a meter, is: \[ \boxed{32.0 \, \mathrm{m}} \]

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The Deep Dive

To find the diameter of a hemisphere with a volume of \( 8582 \mathrm{~m}^{3} \), we start with the volume formula for a hemisphere, which is given by: \[ V = \frac{2}{3} \pi r^3 \] Setting this equal to \( 8582 \), we can solve for \( r \): \[ \frac{2}{3} \pi r^3 = 8582 \] Multiplying both sides by \( \frac{3}{2\pi} \) gives: \[ r^3 = \frac{8582 \times 3}{2\pi} \] Calculating this, we find: \[ r^3 \approx \frac{25746}{6.2832} \approx 4095.17 \] Now taking the cube root to find \( r \): \[ r \approx \sqrt[3]{4095.17} \approx 16.1 \mathrm{~m} \] To find the diameter, we multiply the radius by 2: \[ \text{Diameter} = 2r \approx 2 \times 16.1 \approx 32.2 \mathrm{~m} \] Thus, the diameter of the hemisphere is approximately \( 32.2 \mathrm{~m} \).

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