# math

posted by
**Larry**
.

Shelly sews a blanket that has an area of 170 square feet. it has 30 square blocks, each the same size. What is the approximate length of each side of a block.

a. 1 foot

b. 2 feet

c. 3 feet

d. 4 feet

I doubled checked and the problem is correct. I just can't figure it out.