1) perimeter of a square : a) side × side b) 3 × side c) 4 × side d) 2 × side 2) area of a square:  a) side × side b) 2 × side c) 3 × side d) 4 × side 3) the circumference of a circle of radius r is : a) πr b) 2πr c) πr² d) 1/4πr² 4) 1m²= a) 10 cm² b) 100 cm² c) 1000 cm² d) 10,000 cm² 5) 1cm²= a) 10 mm² b) 100 mm² c) 1000 mm² d) 10,000 mm²

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