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April 21, 2014

Homework Help: 5th GRADE MATH

Posted by Please Help on Tuesday, January 5, 2010 at 11:35pm.

Jamie is forming a cylinder out of two circles and a rectangle. The area of each circle is 4 pi. The diameter of each circle is 4 cm. The height of the rectangle is 6 cm.

Which shows how Jamie could calculate the surface area of the cylinder?

a. 2(4pi)+ 6(4pi)
b. 2(4pi)+ 6(4)
c. 4pi x 4 x 6 pi
d. 4pi x 4 x 6
I chose b the first time. I chose d the second time and was told that I had the wrong answer both times. Will you please explain? Thanks

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