Given:
Each birdhouse uses 5 yard of wood.
To find:
The total length of wood Meri will need to make 12 birdhouses.
Solution:
We have,
Required wood for each birdhouse = 5 yards
Now,
Required wood for 12 birdhouses = 12 × 5 yards
= 60 yards
Therefore, the total length of wood Meri will need to make 12 birdhouses is 60 yards.