document.write( "Question 1209171: ABCD is a square with sides 4 cm. Arcs of radius 4 cm are drawn with centres at B and D. Find the area of the shaded region, in cm2.
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Algebra.Com's Answer #847759 by ikleyn(52814) $\"\"$ $\"About$

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\n" ); document.write( "ABCD is a square with sides 4 cm. Arcs of radius 4 cm are drawn with centres at B and D.
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document.write( "Draw the diagonal AC.  It cuts the shaded area in two congruent parts of equal areas.\r\n" );
document.write( "Each part is a quarter of the circle of the radius 4 cm minus the area of the isosceles\r\n" );
document.write( "right angle triangle with the leg size of 4 cm.\r\n" );
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document.write( "So, the shaded area is  \r\n" );
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document.write( "     =  = 8*3.14159265-16 = 9.132741cm^2.    ANSWER\r\n" );
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