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Find the surface area of the cylinder:
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Math Problems
Algebra 2
Find the radius or diameter of a circle
Full solution
Q.
Find the surface area of the cylinder:
Identify Formula:
Identify the formula for the surface area of a cylinder.
\newline
Surface Area =
2
π
r
h
+
2
π
r
2
2\pi rh + 2\pi r^2
2
π
r
h
+
2
π
r
2
, where
r
r
r
is the radius and
h
h
h
is the height.
Find Given Values:
Find the given values for the radius and height of the cylinder. Let's say the radius
r
=
5
r = 5
r
=
5
units and the height
h
=
10
h = 10
h
=
10
units.
Plug Values:
Plug the values into the surface area formula.
\newline
Surface Area =
2
π
(
5
)
(
10
)
+
2
π
(
5
)
2
2\pi(5)(10) + 2\pi(5)^2
2
π
(
5
)
(
10
)
+
2
π
(
5
)
2
.
Calculate First Part:
Calculate the first part of the formula,
2
π
r
h
2\pi rh
2
π
r
h
.
\newline
2
π
r
h
=
2
×
π
×
5
×
10
=
100
π
2\pi rh = 2 \times \pi \times 5 \times 10 = 100\pi
2
π
r
h
=
2
×
π
×
5
×
10
=
100
π
.
Calculate Second Part:
Calculate the second part of the formula,
2
π
r
2
2\pi r^2
2
π
r
2
.
\newline
2
π
r
2
=
2
×
π
×
5
2
=
50
π
2\pi r^2 = 2 \times \pi \times 5^2 = 50\pi
2
π
r
2
=
2
×
π
×
5
2
=
50
π
.
Add Parts Together:
Add both parts together to get the total surface area.
\newline
Surface Area =
100
π
+
50
π
=
150
π
100\pi + 50\pi = 150\pi
100
π
+
50
π
=
150
π
.
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\newline
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\newline
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