If a triangle, with one of its side 7 cm, is enlarged by a scale factor of 4, then find the length of the corresponding side in the new triangle.

22 cm

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1.75 cm

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10 cm

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28 cm

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Solution

The correct option is D
28 cm

Triangle is enlarged by scale factor 4

Then, the side whose length in the original triangle was 7 cm, will become 7 x 4 = 28 cm in the new triangle.

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A Triangle ABC with AB=3cm BC=6cm AC=4cm is enlarged to a triangle DEF with longest side = 9cm.

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△ A B C

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B C = 6

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△ D E F = 9

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