document.write( "Question 274701: A Rectangle is inscribed in a semicircle of radius 10. Find a function that models the area (A) of the rectangle in terms of its Height (H).\r
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document.write( "WOW! I don't even know how to begin on this one. The answer is the textbook is A(h)=2h times square root of 100-h squared.
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document.write( "Please help! \n" );
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Algebra.Com's Answer #200471 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! the rectangle sits centered on the diameter with the upper corners touching the semicircle\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "two radii drawn to the upper corners divide the rectangle into three triangles\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the area of one of the smaller outer triangles is equal to 1/4 of the area of the rectangle \n" ); document.write( "(bisecting the larger central triangle shows the 4 smaller congruent triangles)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the hypotenuse of the triangle is the radius (10) \n" ); document.write( "the height of the triangle is the height of the rectangle (h)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "by Pythagoras, the base of the triangle is ___ sqrt(100 - h^2)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the area of the triangle is ___ (1/2) (h) (sqrt(100 - h^2))\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the area of the rectangle is 4 times the triangle \n" ); document.write( " |