Evaluate s5 for 600 + 300 + 150 + … and select the correct answer below

Hence,

Step-by-step explanation:

We are asked to evaluate:

We are given a geometric series.

( since each term of the series are in geometric progression as each term is half of the previous term of the series.

i.e. we have a common ratio of 1/2 )

Also, we know that sum of n terms in geometric progression is given by:

where r is the common ratio.

a is the first term of the series.

Here we have:

Hence,

(a) the volume of the cone is 20/3 in3

hence, option a is correct.