how far from the centre of a circle is a chord of length 18cm if the radius is 15cm〜答案12cm求过程

How far is the zoo from here how far dose the earth from the moon? How far is it from your home to the school?为什么要用how far? How far is it from the library to his home?能说how far away. 保持句子原意How far is the Grand Theatre from here?How far ______ ______ from the the Grand Theatre How far is the Happy Valley from here?怎么写 how far is China away from the Nobel prize how far away from the happiness 的中文意思 How ______is the hospital?It'snine kilometers_____here A.far,away B.far away,far awayC.far,away from D.far away,from How far is it from far from the manbudong Far from the speaker far from the truth far from the truth ---_____(how long还是how far）is the youth centre from here?---About 40 minutes___(far away). How far is it from school to your home,from后面要不要加the? 请问：How Big Is the Sun?How Far Is It from Us 的答案是什么 -( ) is the library from our school?-It's quite near.Just go ( )the road.A.How far;crossB.How long;arossC.How far;arossD.How long;cross