Approximate the change in the lateral surface area (excluding the area of the base) of a right circular cone of fixed height o
f hequals=88 m when its radius decreases from requals=99 m to requals=8.98.9 m (upper s equals pi r startroot r squared plus h squared endroots=πrr2+h2).
A 2024-T4 aluminum tube with an outside diameter of 3.6 in. will be used to support a 24-kip load. If the axial stress in the member must be limited to 6.4 ksi, determine the wall thickness required for the tube.