Question

(you can zoom in) Can someone please explain why this is wrong?? ( Pythagorean theorem )

Answer 1

`\bf \textit{pythagorean theorem}\\\\ c^2=a^2+b^2\implies c=√(a^2+b^2)\qquad \begin{cases} a=20\\ b=13.5 \end{cases} \\\\\\ c=√(20^2+13.5^2)\implies c=√(582.25)\implies c\approx 24.12985702402730 \\\\\\ c\approx 24.1\impliedby \textit{rounded up}`

Answer 2

20^2 + 13.5^2 = c^2
582.25 = c^2
√582.25 = c
24.1 = c

hope this helps :)