GOOD TO READ

1. Presented by:
k.Subhashini
9 -A

3. 3
2
1 a
a
a 


4. 2
6a
a)
6(a
a)
(a
a)
(a
a)
(a
a)
(a
a)
(a
a)
(a
















5. 2
2
2
2
2
4
)
a
a
(
6a
-
:
area
remaining
So
reduced.
is
bottom
and
top
of
area
The
.
6a
cube
of
area
surface
l
that tota
know
We
a





6. 3
a
a
a
a





7. CUBOID :- A three-dimensional
geometric figure formed of six
rectangular plane faces, each
set at right angles to the four
sides adjacent to it.

8. FINDING TOTAL SURFACE AREA OF
CUBOID:-
)
2(
)
(
2
)
(
2
)
(
2
)
(
)
(
)
(
)
(
)
(
)
(
hl
bh
lb
l
h
h
b
b
l
l
h
h
b
b
l
l
h
h
b
b
l






















9. FINDING LATERAL SURFACE AREA OF
CUBOID :-
h
b
l
h
b
h
l
h
b
h
b
h
l
h
l
)
(
2
)
(
)
(
2
)
(
)
(
)
(
)
(















10. FINDING VOLUME OF CUBOID:-
h
b
l 



12. rh
2
h
r
2
Cylinder
of
area
surface
curved
So
r
2
r
radius
with
circle
of
perimeter
know
We








13. )
(
2
2
2
cuboid
of
area
surface
Total
2
circles
two
of
Area
2
cuboid
of
area
surface
Curved
2
2
h
r
r
r
rh
r
rh













14. h
r
h
r
2
2






16. .
2
2
1
rl
r
l







17. )
(
Area
Surface
Total
Area
Surface
Curved
circle
of
Area 2
r
l
r
rl
r








18. h
r
h
r
2
2
3
1
3
1







20. 2
4
sphere
of
area
surface
So
circle
a
of
area
the
times
4
sphere
of
area
Surface
r




21. 3
3
3
4
3
4
r
r






23. 2
2
2
r
2
circle
area
the
twice
hemisphere
of
area
surface
Curved
r







24. 2
2
3
r
3
circle
area
the
Thrice
Hemisphere
of
area
surface
Total
r







25. 2
2
3
2
3
2
r
r




