Do y’all know what 6/7 + 9/10 + -5/7

Af jewelry box is in the shape of a rectangular prism with an area of 528 cube inches. the length of the box is 12 inches and the height is 5 1/2 inches. what is the width of the jewelry box

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

Ineed here’s a picture of the question