1.一类锥体的统一外接球半径公式设圆锥的母线长为l,高为h,或侧棱长都相等的棱锥的侧棱长为l,高为h,则它们的统一外接球半径公式为R=l22h(1)设圆锥的母线长为l,母线与底面所成的角为α,或侧棱长都相等的棱锥的侧棱长为l,侧棱与底面所成的角为α,则它们的统一外接球半径公式为R= 1. The formula for a uniform circumcircle sphere radius of a class of cones. Let the side lengths of the pyramids with l, h, or h equal to the length of the pyramid be l and h be their uniform circumsphere radii. The formula is R=l22h(1). The length of the busbar of the cone is l, the angle formed by the busbar and the bottom is α, or the length of the side rib of the side rib is equal to l, and the angle formed by the side edge and the bottom is α, their uniform circumscribed sphere radius formula is R=