# chapter 10

### alex s

## chapter 10.1 parallelogram and trapazoid

formula for parallelogram: A= b h

formula for trapazoid: A=a+b/2*h a is the top and b is the bottom h is the height

## chapter 10.2 area of a circle

the formula: a= l-lr2

pie= 3.14 time radius squared

## 10.3 three dimensional figure

## prism a prism is a polyhedron. it has two congruent bases that lie in parallel planes. the other faces are rectangle. | ## a pyramid a pryramid is a polyhedron. pyramids have one base. the other face are triangles. | ## cylinder a cylinder is a solid with to circle as bases. |

## 10.4 surface areas of prism and cylinders

prism

formula : 2B + Phb = 1/2 time the heigh times the base

cylinders 2

s=2B + Ch=2pier + 2pierh

## 10.5 surface areas of pyramids and cones

s= b + 0.5*pl

S=3.14*r squared + 3.14*r*l

## 10.6 volume of prisms and cylinders

v=Bh

v= volume

B= base

h= height

## 10.7 volume of pyrimids and cones

volume of a pyrimid: v=1/3Bh 2

volume of a cone : 1/3Bh=1/3*3.14*r h

## 10.8 volume of a sphere

1 3

volume :V=4/3*3.14*r cubed## stuff to remember

## labels

__area is always__

*surface*

__squared__**volume** is always** cubed**

## sphere

a sphere surface area is the same as its volume

How to find the Surface Area of a Rectangular Prism

Surface Area of Three Dimensional Figures, Composite Solids, and Missing Dimensions

Surface Area of a Triangular Prism