document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1205446>Question 1205446</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A hollow metal sphere is made of metal 4mm thick and has an external diameter of 12cm. If the density of the metal is 8.8g/cm³, What is the mass of the sphere?  </SPAN>\n" );
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document.write( "Outside diameter 12cm<br><BR>\n" );
document.write( "Outside radius 12/2 = 6cm<br><BR>\n" );
document.write( "Thickness = 4mm = 0.4cm<br><BR>\n" );
document.write( "Inside radius 6-0.4 = 5.6cmm<br><BR>\n" );
document.write( "Volume of metal: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284%2F3%29%28pi%29%286%5E3-5.6%5E3%29 ALIGN=MIDDLE  ALT=\"%284%2F3%29%28pi%29%286%5E3-5.6%5E3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "The mass is the volume of metal, multiplied by the density of the metal.<br><BR>\n" );
document.write( "I leave the calculations to the student.<br><BR>\n" );
document.write( "(ANSWER: 1488.6g, to one decimal place)<br><BR>\n" );
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