MENSURATION: RECTANGLE In mathematics, a rectangle represents a closed geometrical shape which has four sides and four right angles, right angle means 90 degrees. Properties of Rectangle l is the length and w is the width of the rectangle d is the diagonal of the rectangle All internal angle is 90 degree Parallel side are equal I mportant Formula for Rectangle Area Of Rectangle (A) Area(A) = Length(l) X Width(w) Example: Calculate the area of whose length is 4cm and with is 3cm Given : Length(l) = 4cm Width(w) = 3cm Formula: Area(A) = Length(l) X Width(w) Area(A) = 4cm X 3cm Area(A) = 12 cm^2 Area of given rectangle is 12 cm^2 Perimeter of Rectangle(P) Perimeter(P) = 2 x (Length(l) + Width(w)) Example: Calculate the perimeter of whose length is 4cm and with is 3cm ...