solve the question and write the assumption for meeee

Seam in a heatise sysiens fluws theugh tubes whose touter diameter is 5 cat and whest walls are puter diansier 6em and constane ihicknesi 1 mitr are altached to the nube. Jhe ipace betacen the fins is 3 mim, and thus there are 240 fins per meter lengeth of the nube. Iftat is trantferied le the in heat tramifer from the tube per eneler of its lesgeth as a resalt of alding fins. [Amwert 2636WV ]