小学六年级上册人教版数学基础训练41.42页答案有木有?

1:半径3.5,直径7,圆的周长21.98,圆的面积38.465,(直接报了,打字很累的),2.4,4.8,15.072,18.0864,6,12,37.68,113.04,4.1,8.2,25.748,52.7834,1.5,3,9.42,7.065,10,20,62.8,314. 2:671圈.3:(1):314,(2):5024,(3):5024×80=401920 4:略. 5:2.5. 6:87.5%. 7:2400. 8:27767.5. 9:80÷30%=80篇. 10:4.3. 11:28、20、6折.