Find the area of rectangle QRST, with vertices Q(−1,7), R(5,7), S(5,3), and T(−1,3).

1 answer

To find the area of rectangle QRST, we will first calculate the length of the base and height of the rectangle.

The base of the rectangle is the distance between points Q and R. Using the distance formula √((x2-x1)^2 + (y2-y1)^2), we have:

Base = √((5-(-1))^2 + (7-7)^2)
= √(6^2 + 0^2)
= √(36)
= 6

The height of the rectangle is the distance between points R and S. Using the distance formula again, we have:

Height = √((5-5)^2 + (7-3)^2)
= √(0^2 + 4^2)
= √(16)
= 4

Now that we have the base and height, we can calculate the area of the rectangle using the formula for the area of a rectangle: Area = base x height.

Area = 6 x 4
Area = 24

Therefore, the area of rectangle QRST is 24 square units.