1. The problem statement, all variables and given/known data Find the area and perimeter of shared region in the following diagram: 2. Relevant equations Area of shared Region =x/360 * PI * radius * radius Perimeter of shared Region = x/360 * 2* PI* radius 3. The attempt at a solution I am finding the area of circle & then subtracting the area of triangle to find the area of shared region: Thus A of circle = Pi * radius * radius = 3.14 * 12 * 12 = 144 PI A of Triangle (Note its an equilateral triangle) = sqr(s) * sqrt(3)/ 4 = 36 sqrt(3) Therefore ans = 144PI - 36 sqrt(3) but this is a wrong answer. Similarly perimeter of circle = 12 * 3 = 36 Circumference of circle = 2 * PI * radius = 2* PI * 12 =24 PI Therefore ans= 24PI - 36 Some body please guide me why my logic is not coreect. Zulfi.