find the circumference of circle whose area is 49 pi square cm
Answers
Answered by
0
Answer:
L
e
t
r
a
d
i
u
s
o
f
c
i
r
c
l
e
=
r
A
r
e
a
o
f
c
i
r
c
l
e
=
π
r
2
=
49
π
i
n
c
h
e
s
2
N
o
t
e
t
h
a
t
π
=
22
7
→
π
r
2
=
49
π
→
r
2
=
49
π
π
→
r
2
=
49
→
r
=
√
49
=
7
S
o
,
w
e
n
e
e
d
t
o
f
i
n
d
c
i
r
c
u
m
f
e
r
e
n
c
e
o
f
c
i
r
c
l
e
C
i
r
c
u
m
f
e
r
e
n
c
e
o
f
c
i
r
c
l
e
=
2
π
r
→
2
π
r
=
2
π
(
7
)
=
14
π
→
=
14
⋅
22
7
=
2
⋅
22
=
44
i
n
c
h
e
s
Step-by-step explanation:
Answered by
0
Answer:
we know that area of circle is pi r square=49pi square cm
49pi r square=pi r square
pi pi cancel out
it remains
r square=49 so r=7
2x22/7x7=44
so 44is the correct answer
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