If l 15.2cm A-30.4 m2 find b
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Answered by
28
Answer:
LetAOBbe the sector withOas center.
Given: Radius
=
r=
5.2
cm
Perimeter of sector
=
16.4
cm
So,
OA+
AB+
OB=
16.4
⇒ 5.2+ 5.2+ AB= 16.4
⇒ AB= 6 cm
Area of sector
=
2
1
rl
=
2
1
×
5.2×
6
=
15.6
cm
2
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