Area Perimeter Rectangles

Introduction to area perimeter of rectangles:

In mathematics, the rectangle is a polygon of 4 sides, it's called quadrilateral. The rectangle is one of the quadrilateral with it has the four right angle.

Area of rectangles:

The sum of surface occupied by a plane rectangle is labeled the area of rectangle. The units of the rectangle area are square units.

Perimeter of rectangles:

The length of the boundary of any rectangle is labeled the perimeter of rectangle. The units of perimeter of rectangle are units.



Formulas for Area and Perimeter of Rectangles:

Area and perimeter of a rectangle:

For a rectangle of length = l and breadth or width = b we have:

Area = (l x b) square units.

Length = `(Area)/(width)` and Width =`(Area)/(Leng th or Width)`

Perimeter = 2(l + b) units.

Diagonal =`sqrt(l^2 + b^2)` units.I like to share this free 8th grade math problems with you all through my article.

Examples for Area and Perimeter of Rectangles:

Example 1:

Determine the area and perimeter of rectangles of the length is 23 cm and width is 50 cm?

Solution:

Given:

length( l) = 23 cm.

breath or width( b) = 50 cm.

To find area of the rectangles:

area A = (l x b) square units.

= (23 x 50) square cm.

=  1150 cm2 or square cm.

Therefore, Area of Rectangles = 1150 square cm.

To find perimeter of the rectangles:

Perimeter = 2(l + b) units.

= 2(23 + 50) cm.

= 2(73) cm.

= 146 cm.

Therefore, Perimeter of Rectangles = 146cm.

Example 2:

Find the area and perimeter of rectangles, if length is 12 inches and width or breadth is 5 inches?

Solution:

Given:

Length = 12 inches.

Width or breadth = 5 inches.

To find area of rectangle:

Area = (l x b) square units.

= (12 x 5) square inches.

= 60 square inches.

Therefore, Area of Rectangles = 60 square inches.

To find the perimeter of rectangle:

Perimeter = 2(l + b) units.

= 2(12 + 5) inches

= 2(17) inches.

= 34 inches.

Therefore, Perimeter of Rectangles = 34 inches.