The dimensions of a 7 - cm by 2 - cm rectangle are multiplied by 3. how is the area affected?

Question

Mathematics

Jayden Lawrence

14 January, 11:19

The dimensions of a 7 - cm by 2 - cm rectangle are multiplied by 3. how is the area affected?

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Answers (1)

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Whitney Lewis · Answer 1

Let's figure this out by first finding the dimensions of the original rectangle, and then finding the dimensions of the new rectangle.

Original rectangle: Since the area of a rectangle is the length * width, the area of this rectangle is 7 * 2 = 14 square cm.

New rectangle: The new dimensions of this are 7*3 = 21 cm by 2*3 = 6 cm. To find the area, we multiply these two together. 21*6 = 126 square cm.

126 is 9 times greater than 14, so the area will be multiplied by 9.