Answer:
it is b
Step-by-step explanation:
Answer:
i believe that it is 45
Step-by-step explanation:
I thin the answer is D.DF
First compute the coefficient like this:

Simplifying the fraction over 4! we get:

and the variables are

. So answer

.
The correct answer is C then.
Answer:
a)Volume 390ft3. Surface area 450ft2
b)surface area
c)volume
Step-by-step explanation:
2*15*13=390
2*15*2=60+15*13*2=390