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Question 2

The radius of a cylinder is 5 cm and the height is 7 cm.
Find the Surface Area of the Cylinder. (hint: use the lateral area from the previous question.)
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Question 2 The radius of a cylinder is 5 cm and the height is 7 cm. Find the Surface-example-1
User Vilijou
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1 Answer

6 votes

Answer:

The surface area of the cylinder is
\mathbf{70\pi\;\textbf{cm}^2}

Explanation:

The surface area of a cylinder is express


S=2\pi rh

where
r is the radius of the cylinder and
h its height

Therefore, if the radius of the cylinder is


r=5\;\text{cm}

and its height


h=7\;\text{cm}

the surface area should be


S=2\pi r h\\S=2\pi (5\;\text{cm})(7\;\text{cm}) \;\;\;\;\;\Rightarrow\;\;\;\;\; \mathbf{S=70\pi\;\textbf{cm}^2}

User Lucasgabmoreno
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