Aregular hexagonal pyramid has an upper base edge of 16 ft. and a lower base edge 28 ft. if the volume of the frustum is 18,041 ft.3, find the lateral area of the frustum.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature