Because both angles are the same, and are in the same spot in the congruent triangles, we can set these angles up to equal each other:
Add x to both sides:
Subtract 4 from both sides:
Divide both sides by 4 to get x by itself:
The value of x is
17.
Take the number of blocks and multiply it by the stories
Multiply 7 x 462 using place value and expanded form