The area of a triangle is A = bh/2 (base times height divided by 2).
You are given the area (6 square feet) and the height (4 feet) of the triangle. use this formula to calculate the base (b).
If it took 4 miles per hour you multiply that twice cuss its traveling back then forth so you repeat the same process 30 miles times 2 which is 60 hope this helps.
Answer:
12
Step-by-step explanation:
