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Home > CAAC > Chapter 7 > Lesson 7.3.4 > Problem 7-112


First figure all of the dimensions of the rectangle by dividingthe known area by the given side.

10xy divided by 5x is 2y.

To show the area as a product, write the dimensions multiplied together.

(2y + 4)(5x + 3)

Find the areas of all of the sections by multiplying the dimensions together, then add the areas to express as a sum.

6y + 20x + 10xy + 12

Use the same method from part (a) to solve part (b).