Question

A circle with radius of 3 cm sits inside a circle with radius of 5 cm.

What is the area of the shaded region?

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Answer 1

Hello!!

So first you need to find the area of the green circle. The formula for finding area for a circle is A = π r2. So the area for the green circle is 28.26 cm. Then you need to find the area of the blue circle. (Using the same formula) which would be 78.5. Then you subtract the value of the green circle to get the value of the shaded region which then your final answer is 50.24 cm. Hope this helped!!

Answer 2

Answer: 50.27cm^2

Step-by-step explanation: Area of a circle = pi*r^2

Assuming the shaded area is the area between the outside of the smaller circle and the boundary of the bigger one, it would be

area of big circle - area of small circle

so pi* (5)^2 - pi*(3)^2

=50.27