.
I just answered to this post TWICE under the links
https://www.algebra.com/algebra/homework/Surface-area/Surface-area.faq.question.1127629.html
and
https://www.algebra.com/algebra/homework/word/geometry/Geometry_Word_Problems.faq.question.1127442.html
saying that
This post as a description of a Math problem is FATALLY uncompleted, which makes the solution IMPOSSIBLE.
It is uncompleted, since it does nor specify the dimensions of the other base of the frustum and does not give any information to get it.
In such a form this post is uncompleted and does not make sense.
If you DO UNDERSTAND the meaning of these words, then PLEASE DO NOT POST IT in this unchangeable form again and again.
Thank you very much.
Have a nice morning / day / afternoon / evening / night.