Figure is made from a square, an equilateral triangle, and three semicircles. One semicircle has an area of 3 as shown -
What is the area of the lune?
8/pi
Solution is here
A semicircle is inscribed in a right triangle as shown. What is the area of the shaded region in the figure?
In a circle of radius 1, an equilateral triangle is inscribed in the circle as shown. What is the area of the blue region?
The square ABCD has a side length of 1, and AEF is an equilateral triangle. What is the area of AEF?
A right triangle has a semicircles with radii of 3 and 4 on its legs, as shown. The semicircles intersect along the hypotenuse. What is the shaded area?
A square and an equilateral triangle have the same perimeter. If the area of the triangle is 16√3 , what is the area of the square?
