$\triangle ABC $is similar to $\triangle PQR$. If ratio of perimeters of $\triangle ABC$ and $\triangle PQR$ is 1:2 and if PQ = 10 cm then what is the length of AB (in cm)?1). 52). 203). 254). 15

$\triangle ABC $is similar to $\triangle PQR$. If ratio of perimeters

1.	$\triangle ABC $is similar to $\triangle PQR$. If ratio of perimeters of $\triangle ABC$ and $\triangle PQR$ is 1:2 and if PQ = 10 cm then what is the length of AB (in cm)?1). 52). 203). 254). 15
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