Needs help: deals with area and circumference

Mathematics

1 answer:

Simora [160]3 years ago

3 0

Area of the big circle-area of the small circle is what you are looking for so
Big circle is (3.5)^2pi=12.25pi
Small circle is 4pi
12.25pi-4pi=8.25pi
8.25pi=26
26cm^2

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