1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard IX
Mathematics
Parallelogram
5 cm 2=1.414
Question
5 cm
(
2
=
1
.
414
)
Open in App
Solution
Side of the regular octagon = 5 cm
∴
Area
of
the
regular
octagon
=
2
1
+
2
×
(
side
)
2
=
2
1
+
1
.
414
×
5
2
=
50
×
2
.
414
=
120
.
7
cm
2
Suggest Corrections
0
Similar questions
Q.
Ramu says that the area of
△
P
Q
R
is,
A
=
1
2
×
7
×
5
c
m
2
Gopi says that it is,
A
=
1
2
×
8
×
5
c
m
2
. Who is correct? Why?
Q.
A Leaf of
20
c
m
2
grows
5
c
m
2
per hour and
B
Leaf of
25
c
m
2
grows
5
c
m
2
per hour
The relative growth rate of leaf
A
and
B
respectively is
Q.
If
sec
θ
=
1.414
, then
sin
θ
is
Q.
Calculate the area of this figure.
Assumption : 1 square = 1
c
m
2
Q.
If
2
=
1
.
414
,
then the value of
6
-
3
upto three places of decimal is
(a) 0.235
(b) 0.707
(c) 1.414
(d) 0.471
