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# Calculating Areas

If the area of a square is 144, what is the perimeter of the square? If a square and a circle have the same perimeter, which of them will have a greater area?

A triangle, a square, a hexagon, an octagon, and a circle all have the same perimeter. Which one has the smallest area?

**Note:** All of the polygons are regular.

and the perimeter of the blue triangle is 30,

and the perimeter of the six-pointed star is 40,

what is the perimeter of the green hexagon?

Find the area of the shaded annulus.

What is the area of the given figure?

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