Find the similarity ratio and the ratio of perimeters for two regular octagon's with areas of 18 in.² and 50 in.²

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

17 in long 1.3 ft wide and 8in high what is the volume

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.