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alexira [117]
3 years ago
8

If the area of a circle is 58 square feet, find the circumference

Mathematics
2 answers:
Blizzard [7]3 years ago
7 0

Answer:

C≈27 feet

Step-by-step explanation:

A=πr²

A/π=r²

√A/π =r or –√A/π=r (refused)

then r =√(A/π) =√(58/π) =4.297829403 feet

C=2πr=2π(4.297829403)=27.00405856≈27 feet

Alenkinab [10]3 years ago
5 0

<u>Answer:</u>

Circumference of required circle = 27.0021 feet.

<u>Solution:</u>

Given that area of circle = 58 square feet

We need to find the circumference

Circumference of circle = 2\pi r where r is radius.

We don’t have radius in given information but we do have area of circle.

So first need to calculate radius of a circle from given area.

Area of circle = \pi r^{2}

where “r” is radius of circle.

58=\pi r^{2}

r^2= (58 \times 7)/22=18.4545

So we get

r = square root of 18.4545 = 4.2958 feet

Circumference of circle = 2 \mathrm{\pi r}

= 2 (\frac{22}{7}) (4.2958) = 27.0021 feet.

Hence circumference of required circle = 27.0021 feet.

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