As shown in the figure, the area of the shadow part is 18% of the area of the big circle and 38% of the area of the small circle. If the area of the shadow part is 15 square centimeters, find the total area of this figure

As shown in the figure, the area of the shadow part is 18% of the area of the big circle and 38% of the area of the small circle. If the area of the shadow part is 15 square centimeters, find the total area of this figure

The area of the big circle is 15 △ 18 = 120 (square meters), the area of the small circle is 15 △ 38 = 40 (square centimeters), 120 + 40-15 = 160-15, = 145 (square centimeters). A: the total area of this picture is 145 square centimeters