shaniquahayles590 shaniquahayles590

14-09-2021
Mathematics

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a triangle with an area of 7cm² undergoes an enlargement and the new area is 63cm². What is tje scale factor of the enlargement.?

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musiclover10045 musiclover10045

14-09-2021

New area / old area = 63/7 = 9

The actual area increased 9 times.

Area is a squared value, so the scale factor would be the square root of the increase.

Scale = sqrt(9)

Scale factor is 3

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