Measurement of the Conductivity of Ionic Solutions

The specific conductance of an aqueous ${\mathrm{KNO}}_3$ solution at $298 \mathrm{K},$ for a fixed concentration is $0.024 {\mathrm{ohm}}^{-1}{\mathrm{cm}}^{-1}.$ If the resistance of a cell containing this solution at $298 \mathrm{K}$ was found to be $85 \mathrm{ohm},$ then find its cell constant.