Algebra homework please help!!?

Question

The surface area S of a cylinder is given by the formula S=2(pie)rh + 2(pie)r^2. The height h of the cylinder is 5 more than 3 times its radius r.

a. Write a formula for the surface area of the cylinder in terms of its radius.

b. Find the surface area of the cylinder for r= 3,4, and 6.

please help i'm completely lost about what to do

Answer 1

yah, I was terrible at algebra too......i am even in advanced math, so i took it in 8th grade, so i was better that everyone else in my grade, but i still wasn't very good at it....i am in 9th grade this year and taking geometry and we just started school on the 19th, but Geometry already seems a lot easier....try calling 1-800-ask-rose....they are really helpful.....or go to their website, askrose.com.

Answer 2

S=2(pie)rh + 2(pie)r^2

h = 3r+5

so S=2(pie)r( 3r+5) + 2(pie)r^2

b. S=2(pie)3( 3*3+5) + 2(pie)3^2  u work it out....

continue with other numbers replacign them for r in the same way

Answer 3

Homework is for your progress only. Having other people do your homework isn't going to help you at all. You'll need this stuff in College so you might as well learn it now or else you'll be in remedial(no puns intended) classes which give you no credit and you still have to pay for them.

Just go to school and ask the teacher, if you can't do it you can't do it. :)

Answer 4

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