question: interest rate:principal:interest
choices.label: A B C D
choices.text: side length:height:area intensity of pressure:pressure:area current:power:voltage density:volume:mass
explanation: "interest rate" × "principal" = "interest". generally, the "area" of a graphic should be the base x "height", not the "side length". "intensity of pressure" × "area" = "pressure", but the word order is inconsistent with the query. "current" × "voltage" = "power", but the order of words is inconsistent with the query. "density" × "volume" = "mass", "density" and "volume" and "mass" echo.
relation: interest rate principal interest R3.10
relation: density volume mass R3.10