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By:) LUIS SALAZAR(:. VOLUME The amount of an object that takes up space. Prism V=Bh Cylinder V=Bh...
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Transcript of By:) LUIS SALAZAR(:. VOLUME The amount of an object that takes up space. Prism V=Bh Cylinder V=Bh...
GRADE 8 MATH CHARTBy:) LUIS SALAZAR(:
VOLUME The amount of an object that takes up
space. Prism V=Bh Cylinder V=Bh Pyramid V=1
3 Bh Cone V=1
3 Bh Sphere V=4
3 3.14r2
Question?
What is the volume of a rectangle prism if the height = 5cm and the with = 10cm?
Answer=250
cm
circumference The area within a bounding line: the
vast circumference of his mind. Circle
C=2*pi*r
Question?
What is the circumference of the circle if the diameter 5cm?
Answer=15.7
PerimeterThe perimeter is the border or outer
boundary of a two-dimensional figure.
Square R=4sRectangle P=2l+2w or P=(l+w)
Square P=4s
Big question?
What is the perimeter of a square if all of the sides equal 7cm?
Answer=28cm
Pi A transcendental number,
fundamental to mathematics, that is the ratio of the circumference of a circle to its diameter. Approximate value: 3.141 5927…; symbol: ∏
∏ ∏=3.14
Word problem?
What is the area of the circle if the radius = 7
Answer=
Pythagorean theorem
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.
Pythagorean theorem a2 +b2 =c2
Simple interest formula
Simple interest formula I=prt
Area any particular extent of space or
surface; part: the dark areas in the painting; the dusty area of the room.
Square A=s Rectangle A=lxw or A=bh Triangle A=1
2
Trapezoid A=12
Circle A=3.14xrx2
Question?
What is the area of the square? 10cm
6cm
Answer=16
Big P
P represents the perimeter of the base of all three-dimensional figure.
Big B
B represents the area of the base of a three-dimensional figure.
Question?
What is the volume of the cylinder if the area = 112?
Answer=175.84
Area of the base
Base area is length times width B represents the area of the base of
a three-dimensional figure.
Surface area Surface area is the measure of how
much exposed area a solid object has, expressed in square units. Mathematical description of the surface area is considerably more involved than the definition of arc length of a curve.
Cube (total) S=6s2
Prism(lateral) S=Ph Prism(total) S=Ph+2B Pyramid(lateral) S=1
2Pl Pyramid(total) S=1
2Pl=B Cylinder(lateral) S=23.14rh Cylinder(total) S=23.14rh=23.14r2
Function notation
A notation that describes a function
Ratios
A "ratio" is just a comparison between two different things. ... Given a pair of numbers, you should be able to write down the ratios.
P.E.M.D.A.S.
Parenthesis() Exponents
Multiply (x)DivideAdd (+)Subtract(-)
(÷)