Suppose the diameter of a circle is 5 m. What is its circumference?

So we can use a simple formula. We can use the circumference formula which is - :

C = pi*2*r

aka

C = pi*d

So we can plug in the formula x = 5pi = 15.7079 or 15.71

Therefore the answer is:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2