Answer:

Step-by-step explanation:
we know that
The surface area of a rectangular prism is equal to

where
B is the area of the base
P is the perimeter of the base
h is the height
In this problem we have



substitute

Answer:
Step-by-step explanation:
(D+R) = 80:2 = 40
D = 40-R
(D+8) * R = 72X
Thay D=40-R
(40-R+8)*R = 72X
R=1.55, D=38.45
Basing on the table, in each row, if you divide the cost by the number of people, all of them will yield 55. This means that each person, whether as an individual or in a group, must pay $55 in order to rent a fishing charter boat.
The answer is letter D.
Answer:
B
Step-by-step explanation:
X+x+2+x+x,+2=72
4x+4=72
4x=68
x=17. rectangle is 17 by 19