The dimensions of a square are altered so that 8inches is added to one side while 3 inches is subtracted from the other. the area of the resulting rectangle is 126in^2 .what was the original side length of the square?

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734