A solid is 5 cm tall 3 cm wide and 2 cm stick it has a mass of 145 g what is the density

With alll of except for the 2 that i did already

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?