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Question from shrestha, a parent:

Two concentric circles have radii of 14 cm and 7 cm respectively. Find the area of space between them.

Hi,

I drew a diagram of what you described.

circles

What is the area of the large circle? Now cut a hole in the circle where the hole is a circle with the same center as the larger circle but with a radius of 7 cm. What is the area of the circle you removed? What is the area of the region remaining, the green region in my diagram?

Penny

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