32. As shown in the figure, points $P, Q, R, S, T, U$ divide a large circle with a radius of 20 cm into six equal parts, and there is a concentric circle inside the large circle with a radius of 10 cm. Lines are drawn between the inner and outer circles, enclosing a shaded area, and the shaded area has 3 lines of symmetry. The area of the shaded region is $\qquad$ square centimeters. $(\pi$ is taken as 3.14)
$928$