Answer:
200.96 ft²
Step-by-step explanation:
The question is on surface area of a closed cylinder
Formulae= SA=2 ×pi× r² + 2×pi×r×h
Where pi=3.14
SA= 2×3.14×2² + 2×3.14×2×14
SA=25.12+175.84
SA=200.96 ft²
Answer:
Step-by-step explanation:
The vertex form of a parabola is given by y = a(x - h)^2 + k, where (h, k) is the vertex.
Given vertex at (2,-3), h = 2, k = -3
y = a(x - 2)^2 + (-3) = a(x - 2)^2 - 3
The parabola passes through (0,5) so
5 = a(0 - 2)^2 - 3
5 = 4a - 3
4a = 8
a = 2
The parabola equation in vertex form:
y = 2(x - 2)^2 - 3
5 - x = 12
We're essentially just trying to get "x" onto its own side.
So, simply subtract 5 from both sides.
-x = 12 - 5
Simplify.
-x = 7
Now, divide both sides by -1.
x = -7
~Hope I helped!~
Answer:
8.4cm
Step-by-step explanation:
In a circle, d = 2r, so d = 2 * 4.2cm = 8.4cm
