Find the area of the rectangle
length: x+7
Width: x+3
To find the area of a rectangle, you need to multiply its length and width.
Given:
Length: x+7
Width: x+3
Area of the rectangle = Length x Width
Area of the rectangle = (x+7)(x+3)
Area of the rectangle = x^2 + 7x + 3x + 21
Area of the rectangle = x^2 + 10x + 21
Therefore, the area of the rectangle is x^2 + 10x + 21.
Find the perimeter of the rectangle
Length:x^2 -9
Width:x^2 -4
To find the perimeter of a rectangle, you need to add the lengths of all four sides.
Given:
Length: x^2 - 9
Width: x^2 - 4
Perimeter of the rectangle = 2(Length + Width)
Perimeter of the rectangle = 2[(x^2 - 9) + (x^2 - 4)]
Perimeter of the rectangle = 2[x^2 + x^2 - 9 - 4]
Perimeter of the rectangle = 2(2x^2 - 13)
Perimeter of the rectangle = 4x^2 - 26
Therefore, the perimeter of the rectangle is 4x^2 - 26.