Assuming the radii used for the experiment are 10 cm and 17 cm, calculate the value of change \(x\) for each of these radii
a) For \(r = 10\), \(x = 30\)
b) For \(r = 10\), \(x = 15\)
c) For \(r = 17\), \(x = 51\)
d) For \(r = 17\), \(x = 34\)