Use the formula:

B refers to the base and H refers to the height of the triangle.
As such, multiply both the base and height of the triangle and divide the answer by 2, to find the area of the triangle.
Answer:
“I think wolves are scary, too. You’ll have to do more to convince me that they’re not!”
Step-by-step explanation:
No. There are 3 types of triangles.
Scalene: Triangle which no sides are equal, so all angles aren't congruent
Isosceles: A triangle with 2 equals sides, but has 1 not equal sides.
Equilateral: A triangle which all sides are equal
75% of something is 3/4 as 75/100 is simplified to 3/4. So 3/4 of 200 is 200÷4=50×3= C) 150
For the scale factor, use the dimensions from similar sides:
Using 18 from the original image you would use 6 from the scaled image.
18 /6 = 3
This means the scaled image is 3 times smaller than the original. Because the scaled image is smaller divide 1 by the scale factor to get 1/3.
Q2:
The scale factor is 1 inch = 12 miles.
Multiply the total inches by 12:
6.5 x 12 = 78 miles.