This is just the answer digitally i cant explain the process
Answer:
2 1/4
Step-by-step explanation:
In an equilateral triangle, all 3 sides are the same length. If one side length is x, the perimeter is x+x+x or 3x which is equal to 6 3/4 as said in the problem. You get the equation 3x=6 3/4. Dividing both sides by 3, you get x=2 1/4.
C^2=a^2+b^2
√117^2=6^2+x^2
117=36+x^2
81=x^2
9=x
hope this helps :))