Ask your own question, for FREE!
Mathematics 20 Online
OpenStudy (anonymous):

How do you find the area of a base ?

OpenStudy (solomonzelman):

Of what shape?

OpenStudy (solomonzelman):

Area of the base? Are you talking about a cubic shape?

OpenStudy (anonymous):

The area of what base? the base of a triangle? @vanessat

OpenStudy (anonymous):

cylinder

OpenStudy (solomonzelman):

|dw:1384620193330:dw| Are you given the radius or Circumference or diameter?

OpenStudy (anonymous):

pi * radius^2

OpenStudy (anonymous):

radius

OpenStudy (solomonzelman):

\[\huge {r^2π=A}\]

OpenStudy (solomonzelman):

A is area.

OpenStudy (anonymous):

same thing >_>

OpenStudy (solomonzelman):

I know, I was just typing to give it a s a formula with math-variables.

OpenStudy (solomonzelman):

Do you need it in \[\huge {π}\] or as an approximate value?

OpenStudy (anonymous):

approximate value

OpenStudy (solomonzelman):

\[\huge { π = 3.14}\] and what is your radius?

OpenStudy (anonymous):

7

OpenStudy (solomonzelman):

So plug the numbers into the formula\[\huge {(7)^2 \times 3.14=?} \]

OpenStudy (anonymous):

so id be 153.86?

OpenStudy (anonymous):

multiply the base length

OpenStudy (solomonzelman):

@Precious56, you are right, for Volume, but the user just asked for the base. @vanessat, yes, you got the correct answer! Do you need more help?

OpenStudy (anonymous):

do you know how to find the lateral area of a circular cone

OpenStudy (solomonzelman):

Surface area?

OpenStudy (solomonzelman):

\[SA = πr^2 + πrl\]

OpenStudy (anonymous):

just the surface area so use this SA = πr^2 + πrl

OpenStudy (solomonzelman):

Here, this might help. http://www.web-formulas.com/Math_Formulas/Geometry_Surface_of_Cone.aspx Good conceptually.

OpenStudy (anonymous):

thanku

OpenStudy (solomonzelman):

Anytime!

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!