For letter b you do length times width times height
You did not give us the equation so we can't answer that. Update it and I will try to help.
The cross sectional shape is a circle.
The slope is 0.
Using the formula (y2-y1) / (x2-x1), we wee that when subtracting y2 from y1 we get zero in the numerator and 7 in the denominator.
0/7 = 0
Another way to determine this is by plotting the two points and seeing that they form a horizontal line, indicating that there is a slope of 0.
