ΔABC is similar to ΔPQR. If ratio of perimeters of ΔABC and ΔPQR is 3 ∶ 7 and if PQ = 21 cm, then the length of AB (in cm) is?

ΔABC is similar to ΔPQR. If ratio of perimeters of ΔABC and ΔPQR i

1.	ΔABC is similar to ΔPQR. If ratio of perimeters of ΔABC and ΔPQR is 3 ∶ 7 and if PQ = 21 cm, then the length of AB (in cm) is?
A.	6
B.	14
C.	9
D.	18
Answer» D. 18

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ΔABC is similar to ΔPQR. If ratio of perimeters of ΔABC and ΔPQR is 3 ∶ 7 and if PQ = 21 cm, then the length of AB (in cm) is?

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