The necklace charm shown has two parts, each shaped like a trapezoid with identical dimensions. what is the total area, in square millimeters, of the charm? enter your answer in the box. mm² the figure is two identical trapezoids which share a base. the bases of the trapezoids are 25 millimeters and 32 millimeters. the height of the trapezoids is 15 millimeters

The area of the trapezoid can be calculated through the equation, 
                               A = (b₁ + b₂)h / 2
where b₁ and b₂ are the bases and h is the height. Substituting the known values from the given, 
                              A = (25mm + 32mm)(15 mm) / 2 
                               A = 427.5 mm²
Since there are two trapezoids in the necklace, the area calculated is to be multiplied by two to get the total area. 
                        total area = (427.5 mm²)(2) 
                        total area = 855 mm²