"People are born to succeed, not fail." Henry David Thoreau

Chapter 8

Circles - Radius, Diameter, Circumference

Quadrilaterals

3D Solids

Surface Area

Volume of Irregular Objects

Volume of Prisms

Cylinder - Surface Area & Volume

Composite Solids - Surface Area & Volume

Test

Circle Center.ppt Click this link to see how to find the center of a circle. Use this PPT to help you

complete the homework sheet.

Circumference of a circle: C = pi times diameter.

pi equals 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510...

3.1415926...

Area of Quadrilaterals.ppt Click this link to see how to calculate the area of a quadrilateral. Use this PPT to help you

complete the homework sheet.

Area Formulae

square = a ²

rectangle = ab

parallelogram = bh

trapezoid = h/2 (b₁ + b₂) Trapezoid Area

circle = pi r ²

ellipse = pi r₁ r₂

triangle = (1/2) b h

Volume Formulae

cube = a ³

rectangular prism = a b c

irregular prism = b h

cylinder = b h = pi r ² h

pyramid = (1/3) b h

cone = (1/3) b h = 1/3 pi r ² h

sphere = (4/3) pi r ³

ellipsoid = (4/3) pi r₁ r₂ r₃

The volume of a pyramid is where A is the area of the base and h the height from the base to the apex.

where is the slant height.

Cool!! Click any of these and control the shape with your cursor. From http://mathworld.wolfram.com .

surface	volume
cone
conical frustum
cube
cylinder
ellipsoid
oblate spheroid
prolate spheroid
pyramid
pyramidal frustum
sphere
spherical cap
spherical sector
spherical segment
torus