Posted by Piggy on Friday, March 2, 2012 at 10:26pm.
What is the height of a cylinder with a radius of 6 inches and a surface area of 168pi in^2?
- geometry - drwls, Friday, March 2, 2012 at 10:36pm
Area = 2 pi R^2 + pi R H
Substitute 6 for R.
Area = 72 pi + 6 pi H
= 168 pi
96 pi = 6 pi H
H = 16 (inches)
- geometry - Piggy, Friday, March 2, 2012 at 11:52pm
the formula should be
s = 2piRH + 2piR^2
I follow your method and find the
H = 8. Thanks.
- geometry - drwls, Saturday, March 3, 2012 at 2:07am
You're right. Senior moment.
Area = 2 pi R^2 + 2 pi R H = 168 pi
72 pi + 12 pi H = 168 pi
12 pi H = 96 pi
H = 8
Answer this Question
More Related Questions
- math - surface area of a rightcircular cylinder. The area of a right circular ...
- Geometry - Find the radius of a right cone with the slant height 21m and the ...
- geometry- need help - Claim: the lateral (side ) surface of any area of any ...
- Geometry - The surface area of the sides of a right cylinder can be found by ...
- For -Ms Sue - Claim: the lateral (side ) surface of any area of any cylinder can...
- Geometry/Math - Two right circular cylinders have equal volume. The first ...
- Math - the formula for the surface area of a cylinder is: A=2πrh+2πr^2...
- pre algebra - A cylinder has a circumference of 16pi inches and its height is ...
- Algebra - Find the radius of a right cone with slant height 21 m and surface ...
- Calculus - Find the radius, volume, and hieght of the right- circlar cylindar ...