Mathematics, 02.12.2020 14:00, allytrujillo20oy0dib
The figure shows an ancient coin which was once used in China. The coin is in the shape of a circle of radius 3 cm with a square of sides cm removed from its centre. The area of each face of the coin is 77
cm.
() Form an equation in x and show that it reduces
to 20 - r=0.
(ii) Solve the equation 20 - = 0.
(in) Find the perimeter of the square.
Answers: 1
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The figure shows an ancient coin which was once used in China. The coin is in the shape of a circle...
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