What is the formula for finding common ratio of geometric sequence ​

Step-by-step explanation:

Given a set of numbers, determine if they represent a geometric sequence. Divide each term by the previous term. Compare the quotients. If they are the same, a common ratio exists and the sequence is geometric.

choose any one term in the sequence and divide it by the previous term

Step-by-step explanation:

Area of the circle = 1400π

ie. πr^2 = 1400π . ie r^2 =1400. So r=10√14

Area A = πr^2.Differentiate w.r.t.t

dA/dt = 2πr. dr/dt

900 = 2×π×10√14 .dr/dt

So. dr/dt = 900/2×π×10√14 = 45/π√14 m/sec.

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Mark brainliest