Question

(ANSWER QUICK PLS) What is the surface area of a can that has radius of 9 ft. and height of 3 ft.? Use 3.14 for pi. SA : ? ft^2

A. 678.2
B. 354.3
C. 292.0
D. 458.6

Answer 1

The surface area would be A. 678.2

Explanation:

A = 2 (3.14) (9) (3) + 2 (3.14) (9)^2

= 169.56 + 508.68

= 678.24

Answer 2

The correct answer is A!

Correct Answer:

678.2

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.