Answer:
Formula for the area of a circle;
<h2>A = π

</h2>
Where 'π' represents pi(3.14 or 22/7), and 'r' represents the radius which is being squared.
Plug in the radius into this formula:-
A = π
- <em>Note: I will be using 3.14 as pi(π).</em>
A = 3.14(4^2)
A = 3.14(16)
A = <u>50.24 centimetres</u> is the area for this circle.
Both functions are the solution to the given Laplace solution.
Given Laplace's equation: 
- We must determine whether a given function is the solution to a given Laplace equation.
- If a function is a solution to a given Laplace's equation, it satisfies the solution.
(1) 
Differentiate with respect to x as follows:

Differentiate with respect to y as follows:

Supplement the values in the given Laplace equation.

The given function in this case is the solution to the given Laplace equation.
(2) 
Differentiate with respect to x as follows:

Differentiate with respect to y as follows:

Substitute the values to obtain:

The given function in this case is the solution to the given Laplace equation.
Therefore, both functions are the solution to the given Laplace solution.
Know more about Laplace's equation here:
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The correct question is given below:
Determine whether each of the following functions is a solution of Laplace's equation uxx + uyy = 0. (Select all that apply.) u = e^(−x) cos(y) − e^(−y) cos(x) u = sin(x) cosh(y) + cos(x) sinh(y)
Answer:
a. 70 miles per hour
b. 840 miles
Step-by-step explanation:
280/4 = 70 miles per hour
70*12 = 840 miles
Answer:
N> or equal to 4
Step-by-step explanation:
subtract 6 from -2 which is 4 then you divide by N which is 1.