帮帮我数（英）题The total surface area of a right circular con is 90

帮帮我数（英）题The total surface area of a right circular con is 90 If a right circular cone has a lateral surface area of 6π an 英语翻译Find the circumference of a circular disk whose area is 什么是total surface area? 高数微积分题一道The base of a circular fence with radius 10 m is giv A room is 6m long,5m wide and 3m high.If the total area of t 英语翻译A container in the shape of a right circular cylinder ha The total water area is about three times_____the land area. The flooded area is in ( )of total neglect .The people have 英语翻译The total area of land on earth is about 149 million squ how many times is their total area larger than that of the b 英语句子语法理解The total cultivated area is 13000 mu,of which 10000