Question 36100
The formula for finding the area of cylinders is TTr^2 + 2TTrh.
(TT represents pi)

Step 1.
Form the equation. 
TT(25)+ 2TT(45)

Step 2.
Simplyfy the equation.
25TT + 90TT

* Here you can have the answer in two forms:
- in the form of pi
-in the form of a regular number

Step 3.

(25*3.14)+(90*3.14)

78.5 + 282.6

Area = 361.1 units ^2

or 

Area = 115TT units ^2