Prism M and pyramid N have the same base area and the same helght. Cylnder P and prism Q have the same height and the same base perimeter. Cone Z has the same base area as cylinder Y, but Its height Is three times the height of cylinder Y.
The figures (options) prism M, cylinder P, cone Z and (options) pyramid N, prism Q, cylinder Y have the same volume.

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?