Question

What is the perimeter of this rectangle

Answer 1

24 units

Explanation:

To obtain the dimensions of this rectangle, count the number of blocks in each direction x and y. I count 7 blocks in the x-direction and 5 in the y-direction. Thus, the perimeter, P, is P = 2W + 2L, which here equals:

P = 2(5) + 2(7) = 24 units

Answer 2

A. 2(x2 - 1) = 2(y2 - y1)

Explanation:

Perimeter

P = 2W + 2L

W = √(x2 - x1)^2 = x2 - 1

L = √(y2 - y1)^2 = y2 - y1

So

P = 2(x2 - 1) = 2(y2 - y1)

Answer is A.

2(x2 - 1) = 2(y2 - y1)