Answer:
Each step is 30 inches
Step-by-step explanation: One yard is 36 inches. 10 yards is 360 inches.
360 divided by 12 is 30.
Answer:
21
Step-by-step explanation:
To find the mean, add up all the numbers
15+15+25+29 =84
Divide by the number of numbers
84/4 = 21
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


Solution: 7.5 Degrees per hour
Reasoning: 15/2 is equal to 7 1/2 or 7.5