margin of 1.5 cm along each of its sides. Find 4 Aurandah of width 2.25 m is constructed all along outside a room which is 5.5 m long and 4 m wide. Find: (1) the area of the verandah. (m) the cost of cementing the floor of the verandah at the rate of 200 per of side 30 m Find ma
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Step-by-step explanation:
Let external point be B. OA be radius of circle.
Given:
OB=12.5 cm
AB=12 cm
In right triangle, AOB, by Pythagoras Theorem,
OB
2
=AB
2
+OA
2
AO
2
=OB
2
−OA
2
=12.5
2
−12
2
=12.25
∴AO=3.5 cm
Diameter=2(AO)=2(3.5)=7 cm
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