Find the area of the polygon

I'm pretty sure it is 1039.23

Step-by-step explanation:

You use the Pythagorean Theorem to find the base length and then find the are of the triangle. Then multiply by 12.

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

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

hence, option a is correct.