Answer :
Answer:
The surface area would be A. 678.2
Step-by-step explanation:
A = 2 (3.14) (9) (3) + 2 (3.14) (9)^2
= 169.56 + 508.68
= 678.24
Answer:
The correct answer is A!
Correct Answer:
678.2
Step-by-step explanation:
Remember, π = pi = 3.14
To find the surface area you need to use the expression: 2πrh + 2πr
Substitute the variables (the variables are π, r, and h), turning them into equations in parentheses beside the two numbers (the numbers used in the equation is 2):
2(3.14 x 9 x 3) + 2 (3.14 x 9)
Finally complete the equation.
3.14 x 9 x 3 = 84.78
3.14 x 9 = 28.26
2(84.78) + 2(28.26) = 678.2
So the answer is 678.2.