Q8 of 53 Page 156

In rectangle ABCD, AC = 25 and CD = 7. Find perimeter of the rectangle.

AC = 25


CD = 7


Applying Pythagoras theorem :


AD2 = AC2 – CD2


⇒ AD2 = 252 – 72 = 576


⇒ AD = 24 units


Perimeter of rectangle = 2(AD + CD) = 62 units


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