I think 5.55 will travel in 3.7 seconds
This is the answer in different units
Millimeters-7660.46
Centimeters-766.046
Meters-7.66047
Kilometers- 0.00766046
Inches-301.593
Feet-25.13
Yards- 8.37758
Take the length of one of the sides and times that by the radius. Divide that answer by 2. Now take that and multiply by the number of sides the polygon has. If you can't find the radius or side, you're going to have to use tan, sin, or cos.
Geometric series are in the form of

Where a is the first term and r is the common ratio .
And it is given that




r=-3,2
So the first five terms are

= 2-6+18-54+162 or 2+4+8+16+32
= 122 or 62
The answer to your question is = 148.06