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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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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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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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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Polygon

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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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