A geometric series problem.
1st term = 18 inches
Common ratio =
There are 5 terms in this series.
The sum should be rounded to the nearest tenths.
Total distance covered by the pendulum in its first five swings.
Formula for Geometric Series:
S - means "sum."
n - means "number of terms."
- means "sum of the first "blank" number of terms."
r - means ratio
- means 1st term
Let us solve! ;)
We just substitute the formula.
At this point, we should not forget that the answer should be rounded off to the nearest tenths.
and of course, the units which is in inches.
The total distance traveled by the pendulum during the first five swings is