# Algebra

posted by
**Cassie**
.

A gardener is mowing a 20 by 40 yard rectangular pasture using a diagonal pattern. He mows from one corner of the pasture to the corner diagonally opposite. What is the length of this pass with the mower? Give your answer in simplified form.

A.10 sq rt 20

B.20 sq rt 2

C.400 sq rt 5

D.20 sq rt 5

I think it is D...?