On the coordinate plane shown, each grid unit represents 10 feet. Polygon QRST has vertices Q(10, 30), R(−20, 30), S(−20, −10),

Question

2 years ago

8

and T(10, −10), and represents the floor plan of a room. Find the perimeter and area of the room.

1 answer:

max2010maxim [7] · Answer 1 · 2022-11-24T07:53:58+03:00

P 140 units

A 1200 units^2

Step-by-step explanation:

The length of the rectangle is 20 to -20 = 20 - -20 = 40 units

The width of the rectangle is 20 to -10 = 20 - -10 = 30 units

The perimeter is given by

P = 2 ( l+w) = 2 (40+30) = 2 (70) = 140 units

The area is given by

A = lw = 40*30 = 1200 units^2