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All seven smaller circles are tangent to each other, and the larger circle is tangent to the six outer smaller circles. the radius of each of the smaller circles is 3 cm. In cm^2, the sum of the areas marked "a" is.

 

 Jan 16, 2024
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Radius of large circle =  9......area =  pi * 9^2  =  81 pi cm^2

 

Total area of smaller circles=  (7) pi (3)^2  = 63 pi cm^2

 

Total area of a's  =  81 pi - 63pi  =   18pi cm^2

 

 

cool cool cool

 Jan 16, 2024

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