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9-47.

Find the area and perimeter of each figure below.

  1. A trapezoid with vertical parallel bases: left is 15 m, and right is 26.9 m, and non parallel legs, of 10 m, and 13 m. A dashed line, labeled 8 m, perpendicular to both bases, connects the bases.

    Use the formula below to find the area of a trapezoid:

    Which two sides are parallel? These are the bases.
    Use their dimensions in the formula given above.

  1. A triangle with a base of 12 inches, left side 7 in, and right side 12 inches.  Two internal triangles are created by a line segment, of 5 in, drawn from the upper vertex, to the base, at right angles.

    Use the formula below to find the area of a triangle: