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Lin has a drawing with an area of 20 in squared. If she increases all sides by a scale factor of 4, what will the new area be?

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The new area will be 320 in²

Step-by-step explanation

Lin has a drawing with an area of 20 in² and she increases all sides by a scale factor of 4.

The general rule we need to use here.......

"If the lengths of the sides in a shape are all increased by a scale factor of
k, then the area will be increased by a scale factor of
k^2"

Here the sides are increased by a scale factor of 4. So, the area will be increased by a scale factor of
(4)^2 =16

Thus, the new area will be:
(20*16)in^2 = 320in^2

User Anegru
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