mariposa1415 2 years ago Renata is completing a craft project that involves covering only the lateral surface of a cylindrical container with fabric. The cylinder has a height of 12.8 in. and a radius of 15.1 in. To the nearest square unit, how much fabric does she need for this project? Use a calculator. A. 1,214 in.2 B. 2,040 in.2 C. 2,647 in.2 D. 1,931 in.2

1. zepdrix

Hmm, so what type of problem is this? Volume? Surface Area? Can you tell based on the way it's worded? :)

2. mariposa1415

wellll is said surdace

3. zepdrix

Yesss good :D Do you remember the formula for Surface Area of a Cylinder? $\huge A=2\pi r^2+2\pi r h$ But in this problem, we only care about the LATERAL area, so we'll ignore the area of the top and bottom.$\huge A=2\pi r h$

4. zepdrix

From here it shouldn't be too bad! Just plug in the numbers they gave you. :D Lemme know if you're stuck on any part.

5. mariposa1415

so is 2pi*r*h

6. zepdrix

yes, that will give you the amount of lateral area that you need to cover with fabric. they gave you -r and h- in the question. If your calculator doesn't have a PI button, use 3.14, you should still get close to the correct answer.

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