Monday

April 21, 2014

April 21, 2014

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

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

- 5th GRADE MATH -
**Reiny**, Wednesday, January 6, 2010 at 12:05amVisualize a can, cut off the top and bottom,

you now have a hollow cylinder.

Suppose you take snippers and make a vertical cut and spread out the hollow form.

Would you not get a rectangle whose height is the height of the original can and whose length is the circumference of the circle?

looks like a) to me

- 5th GRADE MATH -
**shiny linderverde**, Tuesday, April 17, 2012 at 7:22pmu r right b is the corrct ans.

**Related Questions**

GEOMETRY(CIRCLE) - Three circles with different radii have their centers on a ...

math - A circle has an area of 25 pi cm^2.If a circle is drawn within that ...

MATH HELP PLEASE - You are given two different circles. The diameter of the ...

8th grade math - circle A has a raduis that is twice the length og the raduis of...

Algebra- circles - On my paper, there's a circle drawn inside of a square, whose...

math - A shaded circle just fits inside a 2m x 3m rectangle. What is the radius ...

Math - Circle C has radius 4 inches. Circle D had radius 9 inches. These two ...

math - The length of the rectangle is 20 m and the width of the rectangle is 10 ...

math - The number of square units in the area of circle P is equal to the number...

math gre question - in an infinite series of circles the radius of the second ...