Answer:
Step-by-step explanation:
2(5)^2+10
2(25)+10
50+10
60
Yes
# 3 is .4 because u multiply .2*.2
know what is the third side length
the difference between the 2 other sides < the greatest side of triangle < the sum of 2 other sides
so here the answers here could be ( 10- 17 - 20)
10-8 < 13 < 10+8
13-8 < 17 < 13+8
13-8 < 20 < 13+8