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3-111.

Copy and complete these generic rectangles on your paper. Then write the area of each rectangle as a product of the length and width and as a sum of the parts.

  1. Generic rectangle
    left edge

    interior left blank

    interior right blank

    bottom edge left

    bottom edge right

  • To write the area as a sum:

    Find the area of each of the rectangle's sections. Then, add them together.

    To write the area as a product:

    Multiply the total length by the total width, but don't simplify it.

    As a sum:
    As a product: 

  1. Generic rectangle left edge top

    nterior top  left  blank

    interior  top right blank

    left edge bottom

    interior bottom left blank

    interior bottom right blank

    bottom edge left

    bottom edge right

  • See the help for part (a).

    As a sum:
    As a product: 

  1. Generic rectangle interior left

    interior middle

    interior right

  • Find the greatest common factor of the areas. That will be the width. Then divide each area by the width to find the length. Then follow the steps for part (a).

    Generic rectangle
    left edge

    nterior left

    nterior  middle

    nterior  right

    bottom edge left

    bottom edge middle

    bottom edge right

  1. Generic rectangle
    left edge top

    interior top left blank

    interior top right blank

    left edge bottom

    interior bottom left blank

    interior bottom right blank

    bottom edge left

    bottom edge right

  • See the help for part (b).