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The diagram shows a square PQRS inside a right-angled isoceles triangle ABC. PQ = QR = 2 cm. Find the area of the triangle ABC.

 

 Jun 20, 2020
 #1
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As follows:

 

Correction:  The final area should just be 9, of course, not 9/2.

 Jun 20, 2020
edited by Alan  Jun 20, 2020
 #2
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Area = ( AP + PS/2 )2   smiley

 Jun 20, 2020

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