Wednesday

January 28, 2015

January 28, 2015

Posted by **Mackenzie** on Wednesday, January 14, 2009 at 10:37pm.

- algebra -
**Reiny**, Wednesday, January 14, 2009 at 10:48pmVol =pi(r^2)(2r) = 54pi

so 2r^3pi = 54pi

r^3 = 27

r = 3

the surface area is made up of 2 circles plus a rectangle with height 2r and length 2pir

rectangle = 2pi(r)(2r) = 4pi(r^2)

the 2 cirlces have area of 2pi(r^2)

so the total area = 6p(r^2)

= 6pi(9) = 54pi cm^2

**Answer this Question**

**Related Questions**

calculus - right circular cylindrical tin cans are to be manufactured to ...

math! - A cylinder is inscribed in a right circular cone of height 8 and radius...

Calculus - A cylinder is inscribed in a right circular cone of height 5.5 and ...

Math - A cylinder is inscribed in a right circular cone of height 8 and radius (...

Calculus - A cylinder is inscribed in a right circular cone of height 8 and ...

Algebra - A manufacturer of tin cans wishes to construct a right circular ...

Algebra - A manufacturer of tin cans wishes to construct a right circular ...

Mathes - The radius of the circular base of the larg tin is 5 cm the height is ...

math - the volume V of a right circular cone is V=(1/3)π r^2 h. If the ...

Calculus - A cylinder is inscribed in a right circular cone of height 6.5 and ...