Answer:
The answer is 21
Step-by-step explanation:
The answer is 21 because...
- It is hard to explain but for step one you need to take the dotted line and the shape above hat and move it underneath the other shape to make a perfect rectangle.
- Step two since the dotted line is our new bottom. It has a length of 7. In this step we multiply 3 times 7
- Step 3 this is the final step in which 3 times 7 equals 21.
- Hope this helped :)
