Aregion r is enclosed by the coordinate axes and the graph of y=k(x-5)^2, k> 0. when this region is revolved around the x-axis, the solid formed has a volume of 2500pi cubic units.
what is the value of k?

The question is asking to calculate the value of K if the R is enclosed be the coordinate axis and the graph of y = k(x-5)^2, and K>0. Base on that, the value of K would be K is equals to 2, I hope you are satisfied with my answer and feel free to ask for more if you have questions and further clarifications 

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !

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