Answer:
396 in.^2
Step-by-step explanation:
The cushion is shaped like a cylinder with 14 inch diameter and 2 inch height.
We need to find the surface area of the cylinder.
diameter = 14 in.
radius = diameter/2 = 7 in.
height = 2 in.
A = 2(pi)r^2 + 2(pi)rh
A = 2(3.14159)(7 in.)^2 + 2(3.14159)(7 in.)(2 in.)
A = 395.84 in.^2
A = 396 in.^2
Answer:
-4
Step-by-step explanation:
Answer:
The triangle would be Obtuse
FV = PV / (1 +r)^n
Where FV = Future Value, PV = Present Value, r = inflation rate in %,
n = number of years.
PV = $38, r = 4%, n = 3 years.
FV = 38 / (1 + 4%)^3
= 38 / (1 + 0.04)^3
= 38 / (1.04)^3 = 33.782
Hence the value 3 years from now = $33.78
Answer:
Georgina should add 3 liters of 49% citric acid solution.
Step-by-step explanation:
let x be the liters of 49% solution that Georgina should add. Then after she has added 0.5 liters of water, the total liters of solution she has will be

and 42% of this should be the solute:

and since adding water does not add any solvent, this amount must come from the 49% citric acid solution; therefore

Solving for
we get:

This the amount of 49% citric acid solution Georgina must add.