A bird refuge is shaped like a parallelogram with a base of 650 m and a height of 450 m. Volunteers want to install birdhouses on the refuge. They divided up the refuge into regions, each approximately 25 m by 25 m, and plan to install one birdhouse in each region.

Which estimate best approximates the number of birdhouses that the volunteers will install on the refuge?
Question 1 options:


45


235


470


585