{"result":{"text":"table attributes columnalign left end attributes row cell kappa equals 1.25 cross times 10 to the power of negative 3 end exponent straight S space cm to the power of negative 1 end exponent colon rho equals 1 over kappa equals fraction numerator 1 over denominator 1.25 cross times 10 to the power of negative 3 end exponent end fraction end cell row cell R equals rho l over A end cell row cell therefore 800 equals fraction numerator 1 over denominator 1.25 cross times 10 to the power of negative 3 end exponent end fraction cross times open parentheses l over A close parentheses comma where l over A equals cell space constant end cell row cell l over A equals 800 cross times 1.25 cross times 10 to the power of negative 3 end exponent equals 1 space cm to the power of negative 1 end exponent end cell end table"},"status":"ok"}