document.write( "Question 214402: I need to find the total surface area of a metal washer that is 2.53 cm in diameter, 0.08cm high and the hole that is drilled out in the center measured 0.32cm in diameter.Can you help with the equation? \n" ); document.write( "

Algebra.Com's Answer #161941 by stanbon(75887) $\"\"$ $\"About$

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need to find the total surface area of a metal washer that is 2.53 cm in diameter, 0.08cm high and the hole that is drilled out in the center measured 0.32cm in diameter
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\n" ); document.write( "Top = [(pi)(2.53/2)^2 - pi(0.32/2)^2 ] cm^2
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\n" ); document.write( "The bottom area is the same as the top so double the top area.
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\n" ); document.write( "Outer side Area?
\n" ); document.write( "sa = (circumference)*(height)
\n" ); document.write( "sa = 2(pi)2.53 * 0.08
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\n" ); document.write( "Inner side Area?
\n" ); document.write( "= 2(pi)0.32*0.08
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\n" ); document.write( "Add top + bottom + outside + inside to get Total surface area
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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