½¨ÖþÎﳯÏòΪÄϱ±Ïò£¬Ë«¿ç³§·¿£¬Ã¿¿ç¿ç¶ÈΪ21m£¬Öù¾àΪ6m£¬²ÉÓÃÖùÍøΪ21m¡Á6m£¬×ÝÏò¶¨Î»ÖáÏß²ÉÓ÷â±Õʽ½áºÏ·½Ê½¡£¸Ã½¨ÖþÁ¢ÃæΪÁËÂú×ã²É¹âºÍÃÀ¹ÛÐèÇó£¬ÉèÖÃÁË´óÃæ»ýµÄ²£Á§´°¡£µõ³µÁº¹ì¶¥±ê¸ßΪ6.9m£¬Öù×Ӹ߶ÈH=6.9+3.336+0.3=10.536,È¡Öù×Ӹ߶ÈΪ10.8m¡£