Asked by AnOnYmOuS GiRl

A square pane of glass has sides of 15cm. How long is its diagonal?
Answered by Ms. Sue
Use the Pythagorean Theorem as I showed you in your last post.

Answered by Bosnian
Diagonal:

d=sqroot(a^2+a^2)

d=sqroot(2*a^2)

d=sqroot(2)*a

a=15cm

d=1.41421*15 Becouse sqroot(2)=1.41421

d=21.21315 cm
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