Now this app ia quiz on geometricalshaopes questions.You can learn and solve Area and Parimeter and Circumference of geometrical shapes like Square,Circle,Triangle,Rhombus etc.Just Focus on quiz and start Earning Points.nThe area, A, of a circle can be found by multiplying Pi (3.14) by the radius squared. That is, A = Pi*r^2. Given the circumference, C, of a circle, the area can be found by dividing the circumference by 2, and multiplying that result by the radius. That is, A = (C / 2)r.nSince all the sides of a square are equal, therefore, the perimeter of square will be 4 times its side, i.e. 4 × Side. It is measured in units, such as m, cm, in, ft, etcnThus, the area of parallelogram = base × height = b × h. base B height Any side of a parallelogram can be chosen as base of the parallelogram. The perpendicular dropped on that side from the opposite vertex is known as height (altitude).n This is how you find basics