12, 6, _, 1.5, 0.75 what is this its on my math assignment im slow sitting doing virtual my teacher wont help me

Which property is illustrated by the statement given below? raj raj.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet