Question

Math Problem please answer the question, (100 points + Brainy)

Answer 1

This question can be answered by reading up on this site.
https://www.shmoop.com/basic-geometry/surface-area-examples.html

Answer 2

3.  $\frac{b}{c} = \frac{e}{b}$

4.  Cross- multiply

8.  $a^2 = cd$

9.  $a^2 + b^2 = cd + ce$

10.  $a^2 + b^2 = c(d+e)$

11.  Line Segment Additive Property