1.

The sum of the squares of the lengths of all the sides of a rectangle is 72. Find the length of a diagonal of the rectangle

Answer» ONG>Answer:

LENGTH of DIAGONAL is 6

Step-by-step explanation:

Let length of rectangle is l

and BREADTH of rectangle is b

According to the question

sum of square of rectangle is 72

Rectangle has equal pair of sides, so

2 {l}^{2} + 2{b}^{2} = 72

{l}^{2} + {b}^{2} = 36


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