Mathematics

Problem

Quadrilateral

PQRS

has sides

PQ = 13\ \text{cm},\ QR = 14\ \text{cm},\ RS = 17\ \text{cm},\ SP = 8\ \text{cm}

. Its total area is

144\ \text{cm}^2

. If

PR

is the diagonal that divides the quadrilateral into

\triangle PQR

and

\triangle PRS

, what is the length of

PR

? a)

14\ \text{cm}

15\ \text{cm}

13\ \text{cm}

16\ \text{cm}