Answer:
18+10k
Step-by-step explanation:
Answer:

squared
Step-by-step explanation:
the formula for the area of a triangle is base x height divided by 2
2.25cm because the drawing is 1/2 the size of the object
I got this. Bottom of the triangle. that flat line is 180 degrees. you have an angle of 120, leaving an angle of 60. if you look at the top, that angle matches the other. so you have 65 degrees on one side, and 60 on the other. so 180-65-60=55. so X=55