设高为X厘米.
3.14 * 81 X * 1/3=3.14 * 36 *(6/7 X - 3)
3.14 * 27 X =3.14 * (216/7X - 108)
27 X=216/7X - 108
216/7X -27 X =108
27/7X=108
X=28
记住采纳哦!
设高为X厘米.
3.14 * 81 X * 1/3=3.14 * 36 *(6/7 X - 3)
3.14 * 27 X =3.14 * (216/7X - 108)
27 X=216/7X - 108
216/7X -27 X =108
27/7X=108
X=28
记住采纳哦!