Which classification best represents a triangle with side lengths 6 cm, 10 cm, and 12 cm? acute, because 62 + 102 < 122
acute, because 6 + 10 > 12
obtuse, because 62 + 102 < 122
obtuse, because 6 + 10 > 12

C

Step-by-step explanation:

use Pythagorean theorem

+ =

c is the longest side

if + > then it's acute (greater than)

if + < then it's obtuse   (less than)

if they are equal, then its a right triangle

+ =

36 + 100 = 144

136 = 144

136 < 144   obtuse

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25