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What is the circumference of a circle with center at point *A* if the distance from point *X* to *Y* is 42?

8
0
0

A
131.88
*and* the *r* in the equation:
Circumference = pi*diameter
Circumference = 3.14*42
Circumference = 131.88

Explaination

By inspecting the diagram, we find that the distance from X to Y, given as 42 units, is also the diameter of the circle. The typically-used formula for the circumference of a circle is 2*pi*r. Since 2r is the same as the diameter, we can substitute that for the 2
B 126.63

C 9.86

D 136.93

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