Question
Circle A has a diameter of 9 cm. Circle B has a radius of 5 cm
which circle has the larger circumference?
About how many centimeters larger is it?
which circle has the larger circumference?
About how many centimeters larger is it?
Answers
Answered by
GPT 3.5
The circumference of a circle is given by the formula C = 2πr, where r is the radius of the circle.
The circumference of Circle A can be found using its diameter, which is twice the radius: C(A) = 2π(9/2) = 9π ≈ 28.27 cm.
The circumference of Circle B can be found directly using its radius: C(B) = 2π(5) = 10π ≈ 31.42 cm.
Therefore, Circle B has the larger circumference, which is approximately 31.42 - 28.27 = 3.15 cm larger than Circle A.
The circumference of Circle A can be found using its diameter, which is twice the radius: C(A) = 2π(9/2) = 9π ≈ 28.27 cm.
The circumference of Circle B can be found directly using its radius: C(B) = 2π(5) = 10π ≈ 31.42 cm.
Therefore, Circle B has the larger circumference, which is approximately 31.42 - 28.27 = 3.15 cm larger than Circle A.
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