The active element of a certain laser is made of a glass rod 33.0 cm long and 1.30 cm in diameter. assume the average coefficient of linear expansion of the glass is equal to 9.00 10-6 (°c)-1. the te

The active element of a certain laser is made of a glass rod 33.0 cm long and 1.30 cm in diameter. assume the average coefficient of linear expansion of the glass is equal to 9.00 10-6 (°c)-1. the temperature of the rod increases by 70.0°c. (a) what is the increase in its length?