document.write( "Question 1137914: The diameter of a sphere d is directly proportional to the cube root of the mass w. Given that the mass is 27kg when the diameter is 21cm, find the radius when the mass is 512kg. \n" ); document.write( "
Algebra.Com's Answer #755778 by josgarithmetic(39620)\"\" \"About 
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d, diameter in cm
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\n" ); document.write( "k, variation constant
\n" ); document.write( "Diameter is two multiplied by Radius.\r
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\n" ); document.write( "\n" ); document.write( "\"d=k%2Aroot%283%2Cw%29\"\r
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\n" ); document.write( "Given that the mass is 27kg when the diameter is 21cm, find the radius when the mass is 512kg.
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\n" ); document.write( "\n" ); document.write( "Substitute and solve. You need the first part to find k first, before finding HALF the diameter.
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