ppt

1. WELCOME

2. SREE NARAYANA TRAINING COLLEGE
SREEKANDESWARAM
POOCHACKAL
B.Ed 2014 -2015
KERALA UNIVERSITY

3. PAPER IX
THEORETICAL
BASIS OF
MATHEMATICS
EDUCATION

4. Submitted by,
Name : SANDHYA RISHIKESH
Option : MATHEMATICS
Reg No : 18014383006

5. Submitted to
GEETHA . P
Lecturer in mathematics

6. Standard :- x
Unit :- Prisms
Topic :- Sphere

7. Sphere

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

9. Total surface area (T S A)
Total surface area of a sphere =
r = radius of sphere

10. Total surface area ( T S A)
T

11. Problem :-
Find the total surface area of a sphere. Whose radius is
5 cm?
Solution :-
Total surface area =
= 4
= 4 25
= 100 cm²

12. Volume
Volume of a sphere =
r = radius of the sphere

13. Problem :-
Find the volume of the sphere having radius 3 cm?
Solution :-
volume of the sphere =
=
= 36

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

15. Solution :-
Total surface area of a sphere =
= 4 x x
= 4 x x 64
= 256 cm²

16. Volume of the sphere =
= x x
=