Question

A rectangle on a coordinate plane has vertices at (7,5), (-7,5), (-7,-2), and (7,-2). What is the perimeter of the rectangle?

Answer 1

Answer:

42

Step-by-step explanation:

A rectangle on a coordinate plane has vertices at (7,5), (-7,5), (-7,-2), and (7,-2).

Perimeter of the rectangle = 2(length ) + 2(width)

LEts find the distance between two points

(7,5), (-7,5)

y values are same . To get distance we subtract the x values

$7-(-7)= 7+7=14$ is the length

(-7,5), (-7,-2) x values are same. Subtract the y values to get the width

$5-(-2)= 7$ is the width

Perimeter of the rectangle = 2(length ) + 2(width)

Perimeter of the rectangle = 2(14 ) + 2(7)=42 units

Answer 2

Perimeter of a rectangle;


P=2l+2w

lets say the length is horizontal and the width is vertical. the distance between the x coordinates will determine the length and the distance between the y coordinates will determine the width. once you have those numbers you can use the perimeter formula.

|7 -(-7)| = 14
l = 14
|5-(-2)| = 7
w=7

P=2(14)+2(7)
P= 28+14
P= 42