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Home > A2C > Chapter 8 > Lesson 8.1.6 > Problem 8-97

8-97.

Phana's garden is 2 meters wide and 5 meters long. She puts a walkway of uniform width around her garden. If the area of the walkway is 30 square meters, what are the outer dimensions of the walkway? Drawing a diagram will help you solve this problem. Homework Help ✎

Draw a diagram.

Find the total area of the outside rectangle by adding
the area of the inside rectangle to the area of the walkway.

30 + 10 = 40 sq m

If x meters of walkway was added to each side, write an
expression for each side of the outside rectangle.

length = 5 + 2x
width = 2 + 2x

Now write an equation of the form (length)(width) = area and solve for x.
Make sure you remember to answer the original question.