Answer for q 2 please
Answers
Step-by-step explanation:
Area
The area of a square is calculated in the usual way once the length of a side is found. See Square definition (coordinate geometry) to see how the side length is found. Once the side length is known the area is found by multiplying the side length by itself in the usual way. The formula for the area is:
area = s 2
where s is the length of any side (they are all the same).
The "diagonals" method to find area
If you know the length of a diagonal, the area is given by:
area =
d 2
2
where
d is the length of either diagonal
The length of a diagonal can be found by using the the methods described in Distance between two points to find the distance between say A and C in the figure above.
Perimeter
A square has four sides which are all the same length. The perimeter of a square (the total distance around the edge) is therefore the four times the length of any side. See Square definition (coordinate geometry) to see how the side length is calculated. The formula for the perimeter is
perimeter = 4 s
where s is the length of any side (they are all the same).
Example
The example below assumes you know how to calculate the side length of the square, as described in Square (Coordinate Geometry). In the figure above, click 'reset'.
The side length of the square is the distance between the points A and B. (Or any two adjacent vertices). Here, this is 22.
Area is the side length times itself, or 22 x 22 = 484
Perimeter is four times the side length or 4 x 22 = 88