Select Max Area

The aim of the game is to select the geometric figure that has the max (greatest) area. To win you will have to select 10 geometric figures right, one in each series. At first, it may seem easy to be solved using visual acuity, however, it is not always so easy to determine the max, sometimes is necessary to resort to mathematical formulas.

The geometric figures that appear are: rectangle, square, triangle, circle and rhombus. The area of each geometric figure is obtained by the following formulas:
Area of the rectangle: a = W * H
Area of the square: a = W^2
Area of the triangle: a = (C1 * C2) / 2
Area of the circle: a = pi * R^2
Area of the rhombus: a = (D1 * D2) / 2

You can select from 3 levels: easy, normal and difficult. The more complex the level, more similar are the geometric figures and more difficult to determine the max. In the difficult level, no help is provided, only can be solved using visual acuity.