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Math·Geometry and Trigonometry·Area and volume

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Circle $K$ has a radius of $8$ millimeters (mm). Circle $L$ has an area of $144\pi {\text{ mm}}^2$. What is the total area, in ${\text{mm}}^2$, of circles $K$ and $L$?

A

$40\pi$

B

$20\pi$

C

$80\pi$

D

$208\pi$