Question

Find the length of diagonal of a square with side 8 cm​

Answer 1

Answer:

$8 \sqrt{2} \: cm$

Step-by-step explanation:

$diagonal = side \sqrt{2} = 8 \sqrt{2} \: cm$

Answer 2

Answer:

Here we should take the diagonal as hypothesis

Here we should take the diagonal as hypothesisThen,hy^2=8^2+8^2

Here we should take the diagonal as hypothesisThen,hy^2=8^2+8^2hy^2=64+64

Here we should take the diagonal as hypothesisThen,hy^2=8^2+8^2hy^2=64+64hy^2=128

Here we should take the diagonal as hypothesisThen,hy^2=8^2+8^2hy^2=64+64hy^2=128hy=√128

Here we should take the diagonal as hypothesisThen,hy^2=8^2+8^2hy^2=64+64hy^2=128hy=√128hy≈11.31

Here we should take the diagonal as hypothesisThen,hy^2=8^2+8^2hy^2=64+64hy^2=128hy=√128hy≈11.31Therefore, length of the diagonal = 11.31cm