3 Dimentional Shapes

3 Dimensional Shapes Lesson:

• Cube
• Sphere
• Cylinder
• Pyramid
• Cone

It has length, width and height so we called as three dimensions using 3 dimenional shape we can mesure the volume of shapes.

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Hexagon

Hexagon Dimensions:

Classification of Two Dimensions on Learn Two Dimensions:

• Parallelogram
• rectangle,
• square,
• rhombus
• triangle
• Isosceles triangle
• Hexagon
• Trapezoid
• Right angled triangle
• Pentagon

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Slope formula

Algebra 9th grade

Sine formula

Sine Formula Tutor

Assume the after triangle

In the amount denotes the triangle.

In the aloft triangle comprise the central angles A, B and C.

If any three ethics are accustomed after we can access the added three values.

Inside angles of the triangle to one eighty degree

We can get the abandon of triangle application the after sine rule.

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Diameter of a circumference

f x math

Volume of a cylinder

formula for volume of a cylinder

Find the volume of cylinder whose radius is 8 cm & height is10 cm

Solution:
The formula used for locating the volume of cylinder, is given as,
Volume of cylinder = pi*r2*h
Volume of cylinder = 3.14*82*10

= 3.14*64*10

= 200.96*10

= 2009.6 cm3
The answer is 2009.6 cm3.

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Formula sheet

Variance

Diameter of a circumferance

Diameter of a circumferance:

Diameter of a circle circumference editorial deals with the definition of the diameter & the circumference & the model issue related to it.
Definition of diameter:

Diameter is the longest line in the circle that passes through the middle of the circle. Diameter of the circle is one time of the radius of the circle.
Circumference:

Circumference is defined as the distance around the circle.

Both the diameter & the circumference are measured in the units (like cm, m)

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What is acute triangle

Algebra vectorial

Polygon

Is circle a polygon

Formulas for Area of Polygons and Circles:
Triangle: Area of Triangle = ½ b h

b ---> base

h ---> vertical height
Rectangle: Area of Rectangle = l w

l ----> length

w ----> width
Square: Area of a square = a2

a ----> side length
Parallelogram: Area of Parallelogram = b × h


b ----> breadth

h ----> height
Circle: Area of a Circle = [pi] r2

r ----> radius

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Formula for volume

what is formula for volume

d = m / v ------------------------Eq. 1
where d is the density, m is the mass & v is volume.
Now in case you are given any three quantities, the third quantity can be calculated. Using equation 1, you can calculate density given mass & volume.
Example 1: If an iron ball has a volume of 100mL & it weighs 780 grams, what is its density? What is its relative density?

d = m / v

d = 780g / 100 mL = 7.8 g/mL
Relative Density or R.D. = density of a substance / density of water
R.D. of Iron = 7.8 g/mL / 1.0 g/mL = 7.8 (dimensionless)
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Pi sine rule

Sine pi
Inverse Sine:

Inverse sine is one of the inverse trigonometric function. Let us discuss in detail.

Inverse sine is denoted as sin-1 (or) Sin-1 (or) arcsin (or) Arcsin.

To find the angle of given triangle shape inverse sine is used.

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Probability
Answers to math problems

How to do percentages

In math we learn how to do percentages or how to calculate percentages of any given value.

How to do percentages is widely used technique throughout the business world, Percentage is denoted with the sign %, for example 50% is read as fifty percentage that an also written as 50/100 or 0.50.

Example:

In a crowd containing 200 people and out of that only 50 are men.Find the percentage of men

Given that

Total number of men = 50

Total number of people = 200

Percentage of men = 50/200 = 1/4 = 0.25

= 0.25 x 100 = 25

There are 25% of men in a crowd.

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Properties of Triangles

Properties of Triangles:

From the shapes of triangle their properties are learning as follows,

Triangle: It is circumscribed with three straight lines.

Equilateral triangle: A triangle, which has three equal sides and interior angles, is called as an equilateral triangle or regular triangle.

Isosceles triangle: A triangle, which has two equal sides and interior angles, is called as an isosceles triangle.

Scalene triangle: A triangle, which has unequal sides and different interior angles, is called as scalene triangle or irregular triangle.

Right triangle: It is a triangle, which has single right angle.

more about----- Angles of a triangle