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Home > AC > Chapter 1 > Lesson 1.1.3 > Problem 1-23

1-23.

The area of each rectangle below is shown in the middle of the rectangle. For each figure, find the missing length or width. Homework Help ✎

  1. Rectangle, length = 8, A = 60 un squared

    The area of a rectangle is the product of the length and width.

    Substitute the area and the unknown length or the width into the equation A = l · w.

    Solve for the unknown variable.

  1. Rectangle, length = 15, A = 180 un squared

    Try not to be confused by the orientation of the rectangle. Solve as in part (a).

  1. area box

    See the example below.

    20un^2 rectangle