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Two squares, a semicircle and a rectangle make the following figure. The red square touch the semicircle. Prove that, Red square area is equal to the total area of yellow square and blue rectangle.
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A square and a semicircle make the following figure. What is the red angle?
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All shapes are squares. The percentage of shaded area.
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Two squares and a semicircle. The length of extended side of small square is 2. Find out the blue area.
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Two rectangles and a square. The length of long side of the red rectangle is 4. What is the total colored area?
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The length of the square is 'a' and O is the center of the circle. Find out the yellow area in terms of 'a'.

Two identical squares make the following figures. The length of green line is 4. What is the area of blue triangle?

The radius of the circle and the side length of the each small square are equal. The red area is 'A' . What is the area of blue square ?

Two isosceles triangle and their top angle is 45 degree. The length of the equal sides are 4. What is the area of red color?