HELP HOW DO I SOLVE THIS

Mathematics

1 answer:

erastovalidia [21]3 years ago

5 0

Answer: C - 36.8cm^2

Step-by-step explanation:

Surface area of a cylinder formula: A=2πrh+2πr^2

Since a drinking straw is open on both ends, we will not need to find the area of the two circles that would normally be on the top and bottom of a cylinder. Therefore, our equation becomes A=2πrh.

Let's plug in the radius and height into the equation: A = 2(π)(0.3)(19.5)

After multiplying these numbers together, our answer is A = 36.8cm^2 , which is option C.

Hope this helps!! :)

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