Anyone got any ideas what are these called :/

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d

If the scale factor between two circles is 2x/5y what is the ratio of their areas?