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Home > MC2 > Chapter 3 > Lesson 3.2.2 > Problem 3-71

3-71.

The perimeter is the sum of all the side lengths that do not touch another tile.

Label and add all the side lengths together:
x + x + ( x − 1) + x + 1 + x + x
Simplify this expression.

The area of each tile is shown in the center of it.

Add the two areas together: x2 + x

Replace x with 7 in both equations.

Area = 72 + 7
Perimeter = 6(7)

Area = 56 sq. un.
Perimeter = 42 un.

See part (a).

See part (a).