Draw a rectangle. Label it 18 inches in width and 24 inches in length

Answer 1

18 inches by 24 inches is a rectangle with a diagonal length of 30 inches

30^2 = 900 = 18^2 + 24^2 = 324 + 576 = 900

The Rectangle Area = 18x24 = 432 in^2

Perimeter = 2(18+24) = 2(42) = 84 inches

or convert to feet

18 inches by 24 inches = 1.5 by 2 feet

the diagonal = 30 inches = 30/12 2.5 feet

Area = 1.5(2) = 3 ft^2 = 432/12^2 = 3 ft^2

Perimeter = 84/12 = 7 feet

all angles are 90 degrees or pi/2 radians

opposite sides are parallel

adjoining sides are perpendicular

You could draw the rectangle by graphing it with vertices (0,0), (0,18), (24,18) and (24,0)

or with vertices (0,0) (0,24), (18,24) and (18,0)

A=LW, L=W+6 inches

A= (W+6)W = W^2 +6W in^2

P=2(L+W) = 2(W+6+W) = 2(2W+6) = 4W+ 12 inches

A=LW, L=W+1/2 feet

A=(W+1/2)(W) = W^2 +W/2 ft^2

P =2(L+W) = 2(2W+1/2) = 4W+1 ft