锥角∠A=60° △ABC是等边三角形BC=18(直径敬嫌)圆面积:亮郑手∏r2=3.14×9×9=254.34侧面积:(1/2)×(BC)×(2∏×9)=508.68圆丛陪锥的全面积:254.34+508.68=763.02