Question

The breadth of a rectangle is 5 cm and each of its diagonal measures 13 cm. Find its length.

Answer 1

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12

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first draw a rough figure abcd

ab and cd stands for breadth

ac and bd stands for length

bc^2=cd^2+bd^2

13^2=5^2+bd^2

169=25+bd^2

144=bd^2

bd=12

ac=bd=12

length=12cm