If perimeter of a rectangle is 48 cm. what is the area

144

Step-by-step explanation:

to get area from perimeter you divide the perimeter by 4 which gives you twelve then you have to square the answer you get which in this case is 12 so that gives you 144 the equation is  

jml angle lkj & angle mj = lm

2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6