解答
解答
求解步骤
Given:
给定 的圆半径:
流行的例子
the 周长 of a circle is 19pi m. Find its diameter in metersA number a decreased by 7 is 2Find the present value of 8000 payable at the end of 2 years, if money may be invested at 6% with interest compounded continuously.rachel has 17 apples.he gives 9 to sarah.how many apples does rachel have nowTwice the 差集 of a number and 4 is at least 19