What is the area of the rectangle wxyz with vertices w (0,1), x (3,4), y (-1,8), z (-4,5) to the nearest unit

Area of rectangle = length x width (product of the two adjacent sides)

Length of wx = sqrt ((3 - 0) ^2 + (4 - 1) ^2) = sqrt (3^2 + 3^2) = sqrt (18) = 4.24

Length of xy = sqrt ((-1 - 3) ^2 + (8 - 4) ^2) = sqrt ((-4) ^2 + 4^2) = sqrt (32) = 5.66

Area = 4.24 x 5.66 = 24 square units.