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Class -IXth

Mr.Vinod Kumar Meena

JNV NANDURBAR-II

TGT-Mathematics

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SURFACE AREA AND VOLUME

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CUBE :- A solid three-dimensional geometric figure bounded by ,six square face, sides , with three meeting at each vertex.

a1

a2

a3

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FINDING THE SURFACE AREA OF CUBE.

a

a

a

a

a

a

a

a

a

a

a

a

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FINDING LATERAL SURFACE AREA OF CUBE:-

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FINDING THE VOLUME OF CUBE :-

a

a

a

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CUBOID :- A three-dimensional geometric figure Which has six rectangular face at right angle each other.

b

h

l

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FINDING TOTAL SURFACE AREA OF CUBOID:-

b

h

l

l

l

l

h

h

h

b

b

b

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FINDING LATERAL SURFACE AREA OF CUBOID :-

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FINDING VOLUME OF CUBOID:-

b

h

l

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CYLINDER:- Cylinder consists of two circular bases of equal area in parallel planes, that are connected by a lateral surface that intersects the boundaries of the bases.

h

r

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FINDING CURVED

SURFACE AREA OF CYLINDER:-

h

r

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TOTAL SURFACE AREA OF Cylinder :-

h

r

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FINDING VOLUME OF CYLINDER :-

h

r

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CONE :- A surface generated by a straight line that moves along a closed curve while always passing through a fixed point.

h

r

l

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h

r

l

FINDING CURVED SURFACE AREA OF

CONE :-

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h

r

l

FINDING TOTAL SURFACE AREA OF CONE :-

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h

r

l

FINDING VOLUME OF CONE :-

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SPHERE :- Surface of which every point is the same distance from a fixed point known as the centre. From every aspect it has the same appearance. A sphere may be described by the rotation of a semicircle or circle, about its diameter.

r

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r

FINDING SURFACE AREA OF SPHERE :-

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r

FINDING VOLUME OF SPHERE :-

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r

HEMISPHERE :-

‘Hemi’ also means ‘half’. So When Sphere is Divided into two equal parts Each equal part is called Hemisphere

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r

FINDING CURVED SURFACE AREA OF HEMISPHERE

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r

TOTAL SURFACE AREA OF HEMISPHERE

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r

VOLUME OF HEMISPHERE