Let PQRS be a parallelogram whose diagonals PR and QS intersect at O. If ΔQRS is an equilateral triangle having a side of length 10 cm, then what is the length of the diagonal PR?

Let PQRS be a parallelogram whose diagonals PR and QS intersect at O.

1.	Let PQRS be a parallelogram whose diagonals PR and QS intersect at O. If ΔQRS is an equilateral triangle having a side of length 10 cm, then what is the length of the diagonal PR?
A.	5√3 cm
B.	10√3 cm
C.	15√3 cm
D.	20√3 cm
Answer» C. 15√3 cm

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Let PQRS be a parallelogram whose diagonals PR and QS intersect at O. If ΔQRS is an equilateral triangle having a side of length 10 cm, then what is the length of the diagonal PR?

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