* don't be a copycat, always double check my answers for errors or carelessness.
TIP: Forgot formula of diagonal of a square. Then derive it easily. When you make a diagonal in a square, that diagonal is simply the hypotenuse of the triangle formed.
So then use Pythagorean Theorem to solve for the length of hypotenuse which is simply the diagonal of the square.
d² = s² + s²
d² = 2s²
d = √2s²
d = s√2
There you have it, you now got the formula without memorizing the formula.
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Answers & Comments
Answer:
d = s√2
where s = 10cm
d = diagonal
d = s√2
d = 10√2
d = 14.14 cm
* don't be a copycat, always double check my answers for errors or carelessness.
TIP: Forgot formula of diagonal of a square. Then derive it easily. When you make a diagonal in a square, that diagonal is simply the hypotenuse of the triangle formed.
So then use Pythagorean Theorem to solve for the length of hypotenuse which is simply the diagonal of the square.
d² = s² + s²
d² = 2s²
d = √2s²
d = s√2
There you have it, you now got the formula without memorizing the formula.
✓✓✓ Quality answers makes you brainy. so Follow and Hit that Brainy button. ✓✓✓