What is the meaning of the underlined digit 648? the underlined number is 4 on the question

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?