3
The length of side c of a triangle if side a =15 and side b=20 is 20.
a^2 + b^2 = c^2;
15^2 + 20^2 = c^2;
225 + 400 = c^2;
625 = c^2;
c = square root of 625
c = 25
Added 11/15/2015 9:14:59 PM
This answer has been confirmed as correct and helpful.
Confirmed by
Andrew. [11/16/2015 12:32:30 AM]
