An office block is 300 meters high and each floor has a height of 3 meters. the base of the office block is a square which is 50 meters on each side. half way up, the office block becomes narrower, with a horizontal cross-section which is a square that is 30 meters on each side. each office has floor area a square 5 meters by 5 meters. make a sketch of the office block. how many offices are there?

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.