12 x 12 x 12 = 1728
6 x 6 x 6 = 216
8 x 8 x 8 = 512
216 +512 = 728
1728 - 728 = 1000
cube root of 1000 = 10
cube is 10 cm
The area of the irregular shape is the area of the two rectangles added together. Use the measure calculate feature of Geometer's Sketchpad to add the areas. The perimeter of the irregular shape is equal to the sum of the six segment around the outside of the figure.
in the y=mx+b form: y=3x-2
