Define a variable.
be the length of the arc of the largest section.
Recall the formula for the circumference of a circle.
The circumference of a circle with diameter
is given by
Substitute 12 in. for
Use the arc measure to write a proportion.
The circumference corresponds to 360
corresponds to 215
(the largest section). Write a proportion.
Multiply each side by 215.
Therefore, the length of the arc of the largest section of the circular plate is about 22.5 inches. The answer is G.
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