Question

find the length of diagonal of a rectangle whose side measure 7 and and 20 cm


Please tell fast ​

Answer 1

Answer:

✓449

Step-by-step explanation:

Use phythagorous theorem

d²= l²+b

7²+20²

49+400

d=✓449

Answer 2

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$Length=20cm \\Breadth=7cm$

$D= \sqrt{ {(length)}^{2} + {breadth}^{2} } \\ = \sqrt{ {20}^{2} + {7}^{2} } \\ = \sqrt{400 +49 } \\ {\boxed{ = \sqrt{449}}}$