㈠ 500絝嬫柟綾沖彂閰電綈鐩村緞鍜岄珮澶氬皯
涓鑸鍙栭珮寰勬瘮1:3錛屼綋縐=h*d^2*3.14/4=3*d^3/4*3.14=500錛宒=5.966錛屽彇鐩村緞5.9綾籌紝妞鍦嗗皝澶村圭Н涓27.9776絝嬫柟錛岀綈鐩寸瓛楂17.7綾籌紝緗愭湁鏁堝圭Н511絝嬫柟