Question

Can someone please help me? Thank you!
What is the diagonal length of a square that has a side length of 10 cm?

Answer 1

Answer:

$\sqrt{200}$

Step-by-step explanation:

you have to use pythagoras' theorem

a^2 + b^2 = c^2

diagonal is c as it's the hypoteneuse

10^2 + 10^2 = c^2

100 + 100 = c^2

c =

$\sqrt{200}$