WELCOME WELCOME

SREE NARAYANA TRAINING COLLEGE

SREEKANDESWARAM

POOCHACKAL

B.Ed 2014 -2015

KERALA UNIVERSITY

PAPER IXTHEORETICAL

BASIS OF MATHEMATICS

EDUCATION

Submitted by,

Name : SANDHYA RISHIKESHOption : MATHEMATICSReg No : 18014383006

Submitted to

GEETHA . PLecturer in

mathematics

Standard :- xUnit :- PrismsTopic :- Sphere

Sphere

Properties of a sphere The distance from the centre of the sphere to any point on it surface, is its radius

Total surface area (T S A)

Total surface area of a sphere = r = radius of sphere

Total surface area ( T S A)

T

Problem :-

Find the total surface area of a sphere. Whose radius is 5 cm?

Solution :-

Total surface area = = 4 = 4 25 = 100 cm²

Volume

Volume of a sphere =

r = radius of the sphere

Problem :- Find the volume of the sphere having radius 3 cm? Solution :-

volume of the sphere =

=

= 36

Problem :-Find the total surface area and volume of a sphere having radius 8 cm ?

Solution :- Total surface area of a sphere =

= 4 x x = 4 x x 64 = 256 cm²

Volume of the sphere =

= x x

=

THANK YOU