The total surface area of a cylinder is given by the formula

Given diameter, d=12meters, we will solve for radius

The height is given as 9meters
Substituting for r and h in the formula will give


Hence the surface area of the cylinder is 565.2m²
Step by Step :
1. 9(2j + 7 + 5j)
2. (9)(2j) + (9)(7) + (9)(5j)
3. 18j + 63 + 45j
Answer: 63j + 63
You x all the sides together and add the 2 numbers you get
Answer:
Question 3: B
Question 4: A, D, E
Step-by-step explanation:
Polynomials can not have a variable appear in the denominator.
4b^4-9b+2, 2x+7, and x-3 are in standard form.