1, if the side length of b is x meters, the side length of f is y, the side length of e is z, the side length of d is m, and the side length of c is w, then there are Y=X- 1, Z=X-2, M=X-3, and because m+w-/kloc-0.

2. The second question seems to be incomplete, and it is not clear what value is needed. But now we know that the side length of c is 4, and it is no problem to find any length value. Go in by yourself.

3. suppose it takes another k days. Next, let's find the efficiency value of A,110, which is considered as115. Write Equation 2 * (11/65438) according to the topic. . . Get K= 10.

The whole problem will be solved.