I don't know how to answer the first part but i'll solve it.
5(3+7)-5
5(10)-5
5x10-5
50-5
45
The volume of a prism of this type is
v= (1/2) x B x h x H
(1/2) x 15.24 x 8 x 12
= 732
Answer: It should actually be 9b6/a4c6
Step-by-step explanation: bc ur simplifying the equation.
I've got the answer It's this