In the picture of a rectangle, a right triangle has been cut out with scissors, and now the remaining area is x. The length of the red line is y. Give your answer as x+y.
+37170 The triangles legs are 5 and 12 y (via pythagorean theorem ) = 13 cm
origianl area of rectangle was 15 x 20 = 300 cm2
less the triangle 300 - 1/2 *5*12 = x = 270 cm2
