Stephanie puts 30 cubes in a box. The cubes are inch on each side. The cubes are 1/2 inch on each side. The box holds 2 layers with 15 cubes in each layer. What is the volume of the box?

15 cubic inches
3 3/4 cubic inches
7 1/2 cubic inches
5 cubic inches

75

step-by-step explanation:

we can't see all full 4 options, but if this is the full option, than the very left one is correct:

-2/5 * -3 3/4

remake the question, adding a picture of all the question, or write down the full left and right answers.

the figure is a concave pentagon.

step-by-step explanation:

in mathematical context, a pentagon is a flat, two-dimensional closed shape (polygon) with 5 straight sides and 5 angles.

now a pentagon is said to be concave if one or more corners bend inwards and at least one of its angles is 180 degrees or more than 180 degrees.

in the given figure, we can see that we have a corner which is bending inwards and an angle which is clearly greater than 180°. therefore, it is a concave pentagon.