To find the volume of a pyramid ;

V= (1/3)B*H

Volume of a cone ;

V=(1/3) πr²h OR V= (1/3)BH

## Sunday, April 22, 2012

### How do you find the Surface Area and Volume of a sphere?

To find the Surface Area of a sphere you would have to use this formula ;

To find the Volume of Sphere you would use this formula ;

To find the Volume of Sphere you would use this formula ;

__Find the surface area and area ;__## Tuesday, April 10, 2012

### how do we calculate Surface Area of a Cylinder?

•To find the Surface Area of a cylinder you would use the formula

S.A.= L.A. + 2B

•To find Lateral Area ( L.A.) you would use the formula

L.A.= 2πrh

•One you get the lateral area you plug that number into the SA formula. The next step, you would have to find the area base of the base to plug it into the SA formula.

Area of base= πr

S.A.= L.A. + 2B

•To find Lateral Area ( L.A.) you would use the formula

L.A.= 2πrh

•One you get the lateral area you plug that number into the SA formula. The next step, you would have to find the area base of the base to plug it into the SA formula.

Area of base= πr

^{2 }### How do we identify Solids?

__Solid Geometry__

- Is the 3- dimensional space.

- There is 3 dimensions, width, depth, and height.

__Solids of Properties__

- Volume

- Surface Area (SA)

__Types of Solids__

- Polyhedra

- Non - Polyhedra

- Polyhedra: must have flat faces. Some shapes that are considered polyhedra are prisms, pyramids, and platonic solids.

- Non - Polyhedra: Only surfaces that are not flat. Shapes that are non-polyhedra are spheres, cylinders, cone, and torus.

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