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Answer:
OB=OC=28cm
Area of circle =πr
2
=
7
22
×28×28
=88×28
=2464cm
2
Since, ABCDEF is a regular hexagon
∴ΔOBC is an equilateral Δ
ar(ΔOBC)=
4
3
×28×28=339.08cm
2
Area of 6 triangles =6×339.08=2034.48cm
2
Area of shaded region = Area of circle - Area of 6.
=2464−2034.48=429.52cm
2
Rate =0.35cm
2
∴ Rate =0.35×429.52=Rs.150.33
Step-by-step explanation:
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