Let the function equal 416 and solve for x.
2x^2 - 6x = 416
2x^2 - 6x - 416 = 0
x^2 - 3x - 208 = 0
(x - 16)(x + 13) = 0
x - 16 = 0 or x + 13 = 0
x = 16 or x = -13
Since the number of rows cannot be negative, discard the -13 solution.
Answer: There are 16 rows.
9514 1404 393
Answer:
h = 7 in
LA = 42π in²
SA = 60π in²
Step-by-step explanation:
Use the appropriate formula with the numbers you know, and solve for the number you need to know.
V = πr²h
h = V/(πr²) = (63π in³)/(π(3 in)²)
h = 7 in
__
LA = 2πrh
LA = 2π(3 in)(7 in)
LA = 42π in²
__
SA = 2πr(r +h)
SA = 2π(3 in)(3 in +7 in)
SA = 60π in²
Answer:
66in^3
Step-by-step explanation:
.5 * 3 * 4 * 11 = 66
formula is
.5 * b * h *length
5/8 because you are just trying to make a whole