please solve question no..2nd
and send me please...!!
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Answered by
1
Answer:
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Step-by-step explanation:
Area of circle
=
154
c
m
2
π
r
2
=
154
r
2
=
154
π
r
2
=
154
22
×
7
r
2
=
7
×
7
r =7 cm
∴
circumference
=
2
π
r
=
2
×
22
7
×
7
=44 cm
Hence 7 cm; 44 cm
(ii)Area of circle
=
6.16
m
2
π
r
2
=
6.16
22
7
r
2
=
616
100
r
2
=
616
100
×
7
22
r
2
=
196
100
r
2
=
1.96
r
=
√
1.96
r=1.4 m
Circumference
=
2
π
r
=
2
×
22
7
×
1.4
=8.8 m
∴
1.4
m
; 8.8 m
Answered by
1
Answer:
area of circle = πr²
154 cm² = 22/7
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