JOSHUA WESTMATH POWERPOINT 2ND

PER

perimeter the border or outer boundary of a two-

dimensional figure. Square P=4s Rectangle p=2l+2w or p=2(l+w)

Word problem

What is the perimeter of a square if the side length is 2.

Solution 8

What is the perimeter of a rectangle if if the length is 4 an the width is 2.

Solution is 12

circumference

The area of a circle, the outer boundary. Example, Circle C=2 r or *d

Word problem

What is the circumference of a circle if the diameter is 4.

Solution 12.66

Area

The area within the space , the space or site on which a building stands; the yard attached to or surrounding a house.

Square A=s2 Rectangle A=lw Triangle A=bh /2 Trapezoid A=1/2(b1+b2)h Circle A=pi*r2

Word problem

What is the area of a square if the side is 4.

Solution 16 What is the area of a rectangle if the

length is 5 an the width is 2. Solution is 10 What is the area of a triangle if the base

is 5 an the height is 8 Solution is 20

Word problem

What is the area of a trapezoid if the half # is 5 an b1 is 2 an b2 is 2 an height is 10

Solution 200

Big P

The perimeter of the base of a three dimensional figure.

Big B

The area of the base of a three dimensional figure.

Surface area Cube (total) s=6s2 Prism (lateral) s=Ph Pyramid (lateral) s=1/2 pl Pyramid (total) s=1/2 pl +b Cylinder (lateral) s=2*pi*r*h Cylinder (total) s=pi*r*h+2*pi*r2 The extent of a 2-dimensional surface enclosed

within a boundary.

Word problem

What is the surface area of a cube if the side is 4

Solution is 96 What is the surface area of a prisms

side if big p is 8 an the height is 10 Solution is 80 What is the surface area of a prymaid

Volume

the amount of space, measured in cubic units, that an object or substance occupies.

Prism V=Bh Cylinder V=Bh Pyramid v=1/3Bh Sphere V=4/3 pi*r3 Cone v=1/3 Bh

Word problem What is the volume of a prism if big B is 4 an

height is 8. Solution 32 What is the volume of a cylinder if big B is 6 an the

height is 9. Solution is 54 What is the volume of a pyramid if the 1/3 is 2 an

big b is 8 an height is 4 Solution is 64

Pi

=3.14 or 22/7

Pythagorean theorem

A2+b2=c2

the theorem that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

Word problem

A2+b2=c2

Simple interest formula

I = prt I = prt

Where,I = interestP = principalr = interest rate (per year)t = time (in years or fraction of a year)

Word problem

I = prt

PEMDAS

P=Punctuations E=Exponents M=Multiply D=Divide A=Add S=Subtract

Word problem

(2*7)5 Solution 70

3d shapes

Shapes that have 3 dimensions

2d shapes

Shapes that have 2 dimensions