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Triangle PQR has an area of 12 ft2. If it is dilated by a scale factor of 3, what will be the area of triangle P’Q’R’?
A. 108 ft2
B. 36 ft2
C. 324 ft2
D. None of the above.

Sagot :

linandrew41

Original area = 12 = [tex]\frac{1}{2} * b *h[/tex]

New Area = [tex]\frac{1}{2}* 3b *3h = 9 * (\frac{1}{2} *b *h) = 9 * 12 = 108 ft^{2}[/tex]

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