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Step-by-step explanation:
Answer: 5376
Step-by-step explanation: if a chessboard have 64 squares that means 84 squares used at the tournament will have 5376 squares all together by multiplying 64 × 84.
a=12 ft
Po=(0.25×π×a²)
Pc=a²+0.5×Po
Pc=a²+0.5×(0.25×π×a²)
Pc=a²×(1+0.5×0.25×π)
Pc=144×(1+0.5×0.25×π)
Pc≈200.55 ft²
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