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The diameter of a circle is
38in. Find its area to the nearest whole number.
Answer Attempt 1 out of 2

The diameter of a circle is $38 \mathrm{in}$ . Find its area to the nearest whole number. $\newline$ Answer Attempt $1$ out of $2$

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Circles: word problems

Full solution

Q. The diameter of a circle is

38 \mathrm{in}

. Find its area to the nearest whole number.

\newline

Answer Attempt

1

out of

2

Find Radius: First, find the radius by dividing the diameter by $2$ . $\newline$ Radius = Diameter $\div 2 = 38\,\text{in} \div 2 = 19\,\text{in}.$
Calculate Area Formula: Next, use the area formula for a circle, $A = \pi r^2$ . $\newline$ Area = $\pi \times (19\text{in})^2$ .
Calculate Area: Now, calculate the area using $\pi \approx 3.14$ . Area $\approx 3.14 \times (19\text{in})^2 = 3.14 \times 361\text{in}^2 = 1133.14\text{in}^2$ .

More problems from Circles: word problems

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\newline

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Question

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\newline

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\newline

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\newline

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