For this case what you should do is find the volume of the tank in the form of a cylinder. By definition, the volume of a cylinder is: V = pi * (r ^ 2) * (h) Where, h: height r: radio Substituting the values we have: V = 3.14 * ((24/2) ^ 2) * (10) V = 4521.6 kL Answer: If the tank is full, it does contain 4521.6 kL of oil
It would be 4200 x 1.09 which is the interest to the power of 6 for the number of years which would then give you 4200 x 1.09^6. This will then give the answer of 7043.82