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mariposa1415
Group Title
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
 2 years ago
 2 years ago
mariposa1415 Group Title
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
 2 years ago
 2 years ago

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zepdrix Group TitleBest ResponseYou've already chosen the best response.0
Hmm, so what type of problem is this? Volume? Surface Area? Can you tell based on the way it's worded? :)
 2 years ago

mariposa1415 Group TitleBest ResponseYou've already chosen the best response.0
wellll is said surdace
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
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.\[\huge A=2\pi r h\]
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
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.
 2 years ago

mariposa1415 Group TitleBest ResponseYou've already chosen the best response.0
so is 2pi*r*h
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
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.
 2 years ago
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