解答
解答
求解步骤
Represent the numbers with :
A.T.Q.:
流行的例子
The sum of 5 times a number and 4 equals 2 .The 周长 of a circle is 13pi in. What is the area, in square inches? Express your answer in terms of pipi.4 A stone is dropped from a point 120m from the ground. Findthe diameter of a circle is 14 what is the 周长When 2 is added to three times a certain number it gives a result of 20.