P6. Tou are to paint a wall meters wide by 2.5 neters high with a roller 0.2 meters wide. How naay all heights wi11 be required to paint the whole wal1 assuming that you do not paint any area tvice. In that case, what woold be the width of the vall strip that would remain unpainted? P7 Tou are to paint a wall 7 meters wide by 2.3 meters high with a roller 0.3metere wide. low many vall heighta wil1 be required to paint the whole wall1 (you might need to paint the same area twice to cover the whole wal) In that case, what would be the width ot the all strip that would painted twice? P8. We have a file contalning floating point nunbers (ve don't know how many) Write a complete C progran that adds up only the nunbers that are vhole (3.0, 12.0, 123.0), ignore the numbers having decinals other than 0. I you use file input, assume the file is naned "numbers.data" P9 We ask the user for positive integer numbers (we don't know how many). Write a complete c program that displays only the numbers that are divisible by either 7 or 11. A negative nunber acts as a sentinel in this case