What is the formula for the area of a cylinder?

2 pi*r^2 + 2 * pi *r * h

Step-by-step explanation:

I will assume that you are looking for surface area

We need to find the area of the top and the bottom, which is the area of a circle

top: pi * r^2

Bottom: pi r^2

Then the side which is the circumference times the height ( it is a rectangle)

side: 2 * pi *r * h

Add them together to get the surface area

SA = pi * r^2 + pi * r^2 + 2 * pi *r * h

    = 2 pi*r^2 + 2 * pi *r * h

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step-by-step explanation:

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc