Asked by Parzival

d=12
h=18
What is the lateral surface area of the cylinder?
A.12 pi cm
B.18 pi cm
C.216 pi cm
D.288 pi cm

Answers

Answered by Damon
circumference * height
pi d h
Answered by Ms. Sue
A=2πrh
Answered by Reiny
Visualize opening up the cylinder, you would see:
2 circles + 1 rectangle

SA = 2π r^2 + (2πr)(h)
= .....

you have all the values, if diameter = 12 , r = 6
Answered by Reiny
I didn't consider that "lateral" could exclude the 2 circles.
Answered by Parzival
Would the answer be C then?
Answered by Damon
I thought that is why they said lateral :)
Answered by Kamryn
216 pie cm^2
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