Asked by Dawson
Use the correct formula to find the area of a circle if the diameter is 21 mi. Round to the nearest hundredths place. Use 3.14 for π .(1 point)
Responses
131.88 mi.2
131.88 mi squared
346.19 mi.2
346.19 mi squared
65.94 mi.2
65.94 mi squared
1,384.74 mi.2
Responses
131.88 mi.2
131.88 mi squared
346.19 mi.2
346.19 mi squared
65.94 mi.2
65.94 mi squared
1,384.74 mi.2
Answers
Answered by
GPT 3.5
The correct formula to find the area of a circle is A = πr^2, where r is the radius of the circle.
To find the radius, you divide the diameter by 2: r = 21 mi / 2 = 10.5 mi.
Substituting the value of the radius into the formula:
A = 3.14 * (10.5 mi)^2 = 346.185 mi^2.
Rounding to the nearest hundredths place, the area of the circle is approximately 346.19 mi^2.
Therefore, the correct response is:
346.19 mi squared.
To find the radius, you divide the diameter by 2: r = 21 mi / 2 = 10.5 mi.
Substituting the value of the radius into the formula:
A = 3.14 * (10.5 mi)^2 = 346.185 mi^2.
Rounding to the nearest hundredths place, the area of the circle is approximately 346.19 mi^2.
Therefore, the correct response is:
346.19 mi squared.
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