Solve 17.34 only. 17.33 attached for reference

17.33 A 1-in-OD steel tube has its outside wall surface maintained at 250F. It is proposed to increase the rate of heat transfer by adding fins of 3/32-in thickness and 3/4-in long to the outside tube surface. Compare the increase in heat transfer achieved by adding 12 longitudinal straight fins or circular fins with the same total surface area as the 12 longitudinal fins. The surrounding air is at 80F, and the convective heat-transter coefficient is 6Btu/hft2F. 17.34 Solve Problem 17.33 if the convective heat-transfer coefficient is increased to 60Btu/hft2F by forcing air past the tube surface