capacitor, capacitance between plates! could you help me? please?

Question

i have to get this right! so, please d help me!

question: a radio capacitor is made of metal plates, each with an area of 6.0 square cm. The plates are arranged to make 15 parallel-plate capacitors wired in a parallel configuration. (a) What is the capacitance if the plates are rotated so that the effective area of overlap is 4.0 square cm.

please help me solve this! i really dont have an idea on how to solve this! so, please help me! thanx.

Answer 1

You don't have enough information ... You need to know the spacing. The capacitance would be

(epsilon * 15 * 4 )/spacing