find the area and the perimeter of the rectangle whose length is 15 cm and the length of one diagonal is 17 centimetre
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we/know that rectangle forms an anglle of 90 degree
so, by using pythagoras theorem
17 square= 15 sq+ breadth sq
289-225= breadth sq
64= breadth sq
so, breadth= 8 cm
so, perimeter=2 (l+b)
2 multiply 23
= 56 cm
area= l multiply bradth
15 multiply8
=120 cm sq
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