To find the area of the cover that Mekhi needs to use, we will first calculate the radius of the pond and then use the area formula for a circle.
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Find the radius: The diameter of the pond is given as 12 feet. The radius (r) is half of the diameter: \[ r = \frac{\text{diameter}}{2} = \frac{12 \text{ feet}}{2} = 6 \text{ feet} \]
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Calculate the area of the circular surface: The area (A) of a circle can be calculated using the formula: \[ A = \pi r^2 \] Substituting the value of the radius: \[ A = \pi (6 \text{ feet})^2 = \pi \times 36 \text{ square feet} \] \[ A \approx 3.14 \times 36 \text{ square feet} \approx 113.04 \text{ square feet} \]
Thus, the area that needs to be covered to keep leaves out of the pond is approximately 113.04 square feet.