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:
There were (10500/1.25) = 8400 visitors in 2001.
Explanation:
An increase of 25% means multiplying by 1.25. So, if the visitors from 2001 are multiplied by 1.25, then the result is 10500. Thus, the amount from 2001 was 10500/1.25=8400
Answer:
subtraction
Step-by-step explanation: