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Find the volume of a pyramid with a square base, where the perimeter of the base is 
9ft and the height of the pyramid is 
6.4ft. Round your answer to the nearest tenth of a cubic foot.
Answer: 
ft^(3)

Find the volume of a pyramid with a square base, where the perimeter of the base is 9ft 9 \mathrm{ft} and the height of the pyramid is 6.4ft 6.4 \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 pyramid with a square base, where the perimeter of the base is 9ft 9 \mathrm{ft} and the height of the pyramid is 6.4ft 6.4 \mathrm{ft} . Round your answer to the nearest tenth of a cubic foot.\newlineAnswer: ft3 \mathrm{ft}^{3}
  1. Find Side Length: First, we need to find the length of one side of the square base. Since the perimeter of a square is the sum of all its sides, and a square has four equal sides, we divide the perimeter by 44.\newlinePerimeter of the base = 9ft9\,\text{ft}\newlineSide of the square base = Perimeter / 44\newlineSide of the square base = 9ft/49\,\text{ft} / 4
  2. Calculate Side Length: Now, calculate the side length of the square base.\newlineSide of the square base = 2.25ft2.25\,\text{ft}
  3. Calculate Base Area: Next, we calculate the area of the square base by squaring the side length.\newlineArea of the base = (Side of the square base)\newlineArea of the base = (2.25ft)2(2.25 \, \text{ft})^2
  4. Calculate Area: Perform the calculation for the area of the base.\newlineArea of the base = 2.25ft×2.25ft=5.0625ft22.25 \, \text{ft} \times 2.25 \, \text{ft} = 5.0625 \, \text{ft}^2
  5. Use Volume Formula: Now, we use the formula for the volume of a pyramid, which is (13)×base area×height(\frac{1}{3}) \times \text{base area} \times \text{height}.
    Volume of the pyramid = (13)×Area of the base×Height of the pyramid(\frac{1}{3}) \times \text{Area of the base} \times \text{Height of the pyramid}
    Volume of the pyramid = (13)×5.0625 ft2×6.4 ft(\frac{1}{3}) \times 5.0625 \text{ ft}^2 \times 6.4 \text{ ft}
  6. Calculate Volume: Finally, calculate the volume of the pyramid.\newlineVolume of the pyramid = (13)×5.0625 ft2×6.4 ft=13×32.4 ft3(\frac{1}{3}) \times 5.0625 \text{ ft}^2 \times 6.4 \text{ ft} = \frac{1}{3} \times 32.4 \text{ ft}^3\newlineVolume of the pyramid = 10.8 ft310.8 \text{ ft}^3
  7. Round Answer: Round the answer to the nearest tenth of a cubic foot. Volume of the pyramid 10.8 ft3\approx 10.8 \text{ ft}^3 (since 10.810.8 is already at one decimal place, no further rounding is needed)

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