A wire of radius 3 mm and 1.25 m length is to be maintained at 60°C by insulating it by a material of thermal conductivity 0.175 W/m-K. The temperature of surrounding is 20°C with heat transfer coefficients of 8.5 W/m^2-K. Find the percentage increase in heat loss due to insulation.

A wire of radius 3 mm and 1.25 m length is to be maintained at 60°C by insulating it by a material of thermal conductivity 0.175 W/m-K. The temperature of surrounding is 20°C with heat transfer coefficients of 8.5 W/m^2-K. Find the percentage increase in heat loss due to insulation.