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Nina Shannon
Mathematics
17 September, 12:19
How to calucate surface area
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Khalil Reed
17 September, 12:23
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2πrh + 2πr²
Step-by-step explanation:
The surface area of a cylinder is made up of the lateral area (area of the curved side of the cylinder) and of the ends.
The lateral area is A = πdh, where d is the diameter of the cylinder and h is the height. This is equivalent to A = 2πrh, where r is the radius.
The area of one end of the cylinder is A = πr².
We must multiply that by 2 if we want the total area of the ends.
Then the overall total is
A = πdh + 2πr², or 2πrh + 2πr².
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Carly Reyes
17 September, 12:33
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Surface area of a cylinder = 2πrh+2πr²
r = radius
h = height
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