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Find the volume of a right circular cone that has a height of 
9.2ft and a base with a circumference of 
7.6ft. Round your answer to the nearest tenth of a cubic foot.
Answer: 
ft^(3)

Find the volume of a right circular cone that has a height of 9.2ft 9.2 \mathrm{ft} and a base with a circumference of 7.6ft 7.6 \mathrm{ft} . Round your answer to the nearest tenth of a cubic foot.\newlineAnswer: ft3 \mathrm{ft}^{3}

Full solution

Q. Find the volume of a right circular cone that has a height of 9.2ft 9.2 \mathrm{ft} and a base with a circumference of 7.6ft 7.6 \mathrm{ft} . Round your answer to the nearest tenth of a cubic foot.\newlineAnswer: ft3 \mathrm{ft}^{3}
  1. Find Radius of Base: First, we need to find the radius of the base of the cone. The formula for the circumference CC of a circle is C=2πrC = 2\pi r, where rr is the radius. We can rearrange this formula to solve for rr: r=C2πr = \frac{C}{2\pi}.\newlineGiven that the circumference is 7.67.6 feet, we can calculate the radius as follows:\newliner=7.6 ft2πr = \frac{7.6 \text{ ft}}{2\pi}
  2. Calculate Radius: Now, let's calculate the radius using the value of π\pi as approximately 3.141593.14159.r=7.6 ft (2×3.14159)r = \frac{7.6 \text{ ft }}{(2 \times 3.14159)}r7.6 ft 6.28318r \approx \frac{7.6 \text{ ft }}{6.28318}r1.21 ft r \approx 1.21 \text{ ft }We will round to two decimal places for intermediate calculations to maintain accuracy.
  3. Calculate Volume: Next, we use the formula for the volume VV of a cone, which is V=13πr2hV = \frac{1}{3}\pi r^2 h, where rr is the radius and hh is the height of the cone.\newlineWe have r1.21r \approx 1.21 ft and h=9.2h = 9.2 ft. Plugging these values into the formula gives us:\newlineV=13π(1.21ft)2(9.2ft)V = \frac{1}{3}\pi(1.21\,\text{ft})^2(9.2\,\text{ft})
  4. Volume Calculation: Now we calculate the volume:\newlineV(13)×3.14159×(1.21ft)2×9.2ftV \approx (\frac{1}{3}) \times 3.14159 \times (1.21 \, \text{ft})^2 \times 9.2 \, \text{ft}\newlineV(13)×3.14159×1.4641ft2×9.2ftV \approx (\frac{1}{3}) \times 3.14159 \times 1.4641 \, \text{ft}^2 \times 9.2 \, \text{ft}\newlineV0.46453×3.14159×13.4692ft3V \approx 0.46453 \times 3.14159 \times 13.4692 \, \text{ft}^3\newlineV19.625ft3V \approx 19.625 \, \text{ft}^3
  5. Round Volume: Finally, we round the volume to the nearest tenth of a cubic foot as requested. V19.6ft3V \approx 19.6 \, \text{ft}^3

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