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Calculate the area of each figure below. Show all work. Remember to include units in your answer.

  1. a square:

    left edge blank

    interior rectangle

    bottom edge 

    square cm

  1. A triangle with a base of 10 inches, left side is unknown and right side is 5 inches.  Two internal triangles are created by a line segment of 4 inches drawn from the upper vertex to the base at right angles .

  1. A trapezoid with parallel horizontal bases (in feet). The trapezoid is split into 3 internal parts with an 8 by 6 rectangle in the middle and two triangles one on either side of the rectangle. The base of one of the triangles is 6 and the other 2.