Answer:
The answer you should be getting is :
Step-by-step explanation:
Answer:
C) 500.83
Step-by-step explanation:
Surface area for a cylinder formula:
SA = 2πrh + 2πr²
Given:
d = 11
r = d/2 = 11/2 = 5.5
h = 9
Work:
SA = 2πrh + 2πr²
SA = 2(3.14)(5.5)(9) + 2(3.14)(5.5)²
SA = 310.86 + 2(3.14)(30.25)
SA = 310.86 + 189.97
SA = 500.83
Answer:
(3±√147, 0) ≈ (-9.124, 0) and (15.124, 0)
Step-by-step explanation:
The points (x, 0) satisfy the distance formula:
d = 14 = √((x -3)² +(0+7)²)
196 = (x -3)² +49 . . . . . square both sides
147 = (x -3)² . . . . . . . . . subtract 49
3 ±√147 = x . . . . . . . . . take the square root and add 3
The points at distance 14 from (3, -7) on the x-axis are (3±√147, 0).
Answer:
Mr.Samson is 58 years old. Mr.Rogers is 35.
Step-by-step explanation
Samson's age Roger's age
2x - 12 x ( 12 years less than twice Mr.Rogers(x))
Equation: 2x - 12 + x = 93 Sum of ages is 93
3x - 12 = 93 Simplified
x = 35 Solve
Rogers = x, so Rogersis 35
But Sampson is 2x - 12 ( 2 * 35 - 12 ), so Sampson is 58