Answer:
317 < 400
The Sum of the squares of the smaller 2 sides (121 + 196 = 317) < longest side squared (400) So, it is an OBTUSE SCALENE TRIANGLE.
Source: http://www.1728.org/triantest.htm
Step-by-step explanation:
3/5 of the group = 24
1/5 of the group = 8
The group = 5 x 8 = 40 .
You can find the percentage by dividing 8/160 and then multiply by 100 so that's 5%