The symbol is made from three concentric circles and three equally spaced diameters of the large circle. The diameter of the large circle is 12, the diameter of small circle is 4 and the diameter of smallest circle is 2. What is the area of the symbol (shaded region) ?
[(area of large circle-area of small circle)/2]+area of smallest circle = [(36π-4π)/2]+π =16π+π =17π is the answer
A semicircle is inscribed in a right triangle as shown. What is the area of the shaded region in the figure?
Rectangle ABCD has AB = 4 and BC = 8. Construct arc AE centered at B with E on side BC and construct arc CF centered at E with F along side AD. What is the area of AFCE, the region shaded in blue?
A rectangle has a side length equal to 10. Two semicircles are constructed with their diameters equal to the length of 10 and along opposite sides of the rectangle, as shown. A circle is inscribed between the intersection points of the semicircles and tangent to the two sides of 10 on the rectangle. What is the area of the shaded region in which the two semicircles are overlapping?
Right triangle ABC is rotated and translated to A’B’C’, as shown below, with B’ exterior to ABC. What is the area of the shaded region BDC divided by the area of the entire shape BADB’A’B?
The 2 diagonals of this rectangle divide it into 4 triangles.
If the area of the shaded region is 42, then what is the area of the rectangle?
