Given that find V = pi * R ^ 2 * h + 2/3 * pi * r ^ 2

(a) the value pi = 3.142 R = 12 h = 14 andr r = 9

(b) the value of / when pi = 3.142 R = 8 V = 3800 and r =6 r

(c) the values of R when pi = 3.142 V = 3500 h = 17 and r = 8.5

(d) the value of r when pi = 3.142 R = 11 V = 4600 and 6.9.