SOLUTION: Hello, Could you give me the surface area of a cylinder when the radius is 6cm and the Length is 21cm. Could you show me the full step by step guide to work this out. Many thank

Question 174099: Hello,
Could you give me the surface area of a cylinder when the radius is 6cm and the Length is 21cm.
Could you show me the full step by step guide to work this out.
Many thanks
Found 2 solutions by nycsub_teacher, ankor@dixie-net.com:
Answer by nycsub_teacher(90) (Show Source): You can put this solution on YOUR website!
Could you give me the surface area of a cylinder when the radius is 6cm and the Length is 21cm.
You need a formula and it is
surface area = 2(πr^2) + 2(πr)(h), where r = radius, h = height
and π = pi = 3.14
I guess by length you meant to type height.
Let SA = surface area of cynlinder for short.
SA = 2(3.14)(6)^2 + 2(3.14)(21)
SA = 226.08 + 131.88
SA = 357.96cm^2

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Could you give me the surface area of a cylinder when the radius is 6cm and the Length is 21cm.
:
The surface area of cylinder consists of the parts
Part 1: the height times the circumference (in this case it's the length)
Part 2: the area of the two ends
;
SA = (2*pi*r*h) + (2*pi*r^2)
:
In your problem; r=6, h=21
SA = (2*pi*6*21) + (2*pi*6^2)
;
SA = 791.68 + 266.19
:
SA = 1017.87 sq/cm
RELATED QUESTIONS
Hello, please could you help me with a question. I need to find the surface area of a... (answered by nycsub_teacher)
Find the surface area of a right circular cylinder whose height is 12cm and the radius is (answered by jojo14344)
Hello, can you tell me the surface area of a cylinder with a radius of 6 and height of... (answered by Alan3354)
Hi A cuboid measuring 25cm by 10cm by 6cm has two cones of 2cm radius each removed... (answered by ikleyn,mananth)
Hello, I need some help here. I think I know what the answer is, but I don't actually... (answered by macston,hemu_da)
can you pleas help me solve ((( Find the total surface area of a cylinder with radius 3... (answered by Alan3354)
can you please help me solve (((Find the total surface area of a cylinder with radius 3... (answered by rfer,Alan3354)
A right circular cylinder has a surface are of 112 pie. If the height of the cylinder is... (answered by Alan3354)
Hi a solid metal sphere of radius 21cm is melted and recast into 2 cylinders each with (answered by josgarithmetic)