121/150 or 0.0806. The 6 is repeating itself.
To subtract? as minus means subract/take away?
Answer:
c
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that
The volume of a trough is equal to

where
B is the area of equilateral triangle
L is the length of a trough
step 1
Find the area of equilateral triangle B
The area of a equilateral triangle applying the law of sines is equal to

where


substitute


step 2
Find the volume of a trough

we have


substitute

