Lets find out...
a^2 + b^2 = c^2
27^2 + 79^2 = 84^2
729 + 6241 = 7056
6970 = 7056....incorrect....no, it is NOT a right triangle
Answer:

Step-by-step explanation:
Assume this is function is a straight line, consider the equation of the straight line: 
To find the gradient of the equation, we use any two coordinates from the table. 

We substitute the value of m in the equation:

To find c, we use the leftover coordinates, (4,0) in the equation above:

Substitute this value of c in the equation to get the function:

Rectangular and polar forms are two forms of equations that translates to plot. In this case, the two forms are convertible to each other by the expressions:
r sin theta = y
r cos theta = x
x2 + y2 = r2
we are given the polar expression r csc theta = 8 and is asked to convert to rectangular form.
in this case, csc theta is equal to 1/ sin theta. thys
r / sin theta = 8
in order to make use of the equations above, then
we multiply r to both numerator and denominator in the left side, that is
r^2 / r sin theta = 8
x2+y2 / y = 8
x 2 + y2 = 8y
Multiply 40 by 8.
40*8=320
320 is your answer. (Or that's how I'd do it. Correct me if I'm wrong)