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Maksim231197 [3]
3 years ago
12

The area of a circle with diameter of 11 feet is

Mathematics
1 answer:
julsineya [31]3 years ago
4 0

1. The area of a circle is calculated using the formula:

Area =  \frac{\pi \:  {d}^{2} }{4}

The diameter is d=11 feet.

This implies that,

Area =  \frac{\pi  \times {11}^{2} }{4}

Area =  \frac{121\pi}{4}  = 95.03 {ft}^{2}

2. For this second question the diameter is d=10.5 feet.

We substitute into the formula to get;

Area =  \frac{\pi  \times {10.5}^{2} }{4}

Area =  \frac{441\pi  }{16}  = 86.60  {in}^{2}

3. The area of a circle is given by the formula,

Area =\pi \:  {r}^{2}

where the radius is r=6.3

This implies that,

Area =\pi \:  {(6.3)}^{2}

Area =36.69\pi = 124.69 {cm}^{2}

4. The given circle has a radius of 3.25 yards.

Area =\pi  \times {3.25}^{2}

Area =10.5625 \pi = 33.18 {yd}^{2}

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