Question

find
the
diagonals of a square whose sides is 10 cm
​

Answer 1

Answer:

${x}^{2} + {x}^{2} = {10}^{2}$

$2 {x}^{2} = 100$

${x}^{2} = \frac{100}{2}$

${x}^{2} = 50$

$x = \sqrt{25 \times 2}$

$x = 5 \sqrt{2}$

$diagonal \: is \: 5 \sqrt{2} \: cm$