In the figure above, what is the area of region PQRST ? DS74602.01

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GMAT DS74602.01

In the figure above, what is the area of region PQRST ?

(1) PQ = RS
(2) PT = QT

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Hi Avi thank you for the video! I have a question: why for RTS I can apply the Pythagorean formula and for PQT not? What's the condition that must be true before I apply the formula? Can you confirm that if you have sides of different length you can apply the Pythagorean formula but if they are the same (like in PQT) you can't?

GiovanniROSANO-ui