Question
The circles are not drawn to scale. The small circle is with radius k and the big circle is with radius K. The ratio of k to K is 5 : 7. If the area of the small circle is 81π cm2, find K. Express your answer in mixed number.
2 m

Click button first when a symbol is required. X

The circles are not drawn to scale. The small circle is with radius k and the big circle is with radius K. The ratio of k to K is 5 : 7. If the area of the small circle is 81π cm2, find K. Express your answer in mixed number.