Atriangle has side lengths of 20 cm, 99 cm, and 108 cm. classify it as acute, obtuse, or right.

a. acute
b. obtuse
c. right

B. Obtuse

If draw it out in your head, it's obviously obtuse.

Let "a", "b" and "с"  be sides of the triangle ("с" is the longest side).
The triangle will be:
right if       a² + b² = c²
аcute if     a² + b² > c²    
obtuse if   a² + b² < c²    

We have a=20, b=99 and c=108
20² + 99² = 400 + 9801 = 10201
and
108² = 11664

10201 < 11664   ⇒  obtuse triangle.

The answer is a 5/20 because if u add all of the marbles there are 20 and there are 5 red marbles so 5/20 is the answer mark as brainliest

4x 20 is 80 but if ther machine is broken then there is none you have to redo the test