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MakcuM [25]
4 years ago
10

Area between two shapes. IXL geometry help pls !

Mathematics
1 answer:
-Dominant- [34]4 years ago
8 0
Since we know the Circumference of the inner circle, we can divide by (pi symbol) to get the diameter of the inner circle.

87.92/3.14=28

With knowledge of 28 being the diameter, we can also solve for the radius, which is 14.


The area of the inner circle is (pi)14^2

The inner circle’s are is 615.44 unit^2

The outer circle’s radius is 14+7 or 21

(pi)21^2= 1,384.74

We subtract the inner circle’s area from the outer circle’s area.


1,384.74-615.44= 769.3

769.3 square kilometers
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