Select Max Area - Geometry

Solve geometry problems, select the figure with max (greatest) area. To win, will have to select 10 figures right, one in each series. At first, it may seem easy to be solved using visual acuity, however, it is not always so simple to determine the max area, sometimes is necessary to resort to mathematical geometric formulas.

Area formula for different shapes:

Rectangle: a = W * H

Square: a = W^2

Triangle: a = (C1 * C2) / 2

Circle: a = pi * R^2

Rhombus: a = (D1 * D2) / 2

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