A vendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?
1 answer:
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Answer:
Step-by-step explanation:
(1). A = π r²
A = 4 π
Area of shaded region is =
or
(2). C = 4 π
In this case, the length of the bigger arc and the area of shaded region happen to be the same.
The length of the arc ADB is or
