As part of her art project, Sarah is painting 2 square pyramids. The first pyramid has a base with a length of 6
cm and lateral faces with heights of 8.5 cm. The second
pyramid has a base that is half the length of the first
pyramid, and each lateral face has a height of 8.5 cm. What
is the surface area of the second pyramid?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?