Add up all the sides of the rectangle.
12cm
The formula for finding the perimiter of a rectangle is add up all of its sides
To calculate the perimeter of any rectangle, just use the basic definition of perimeter: in this case, you just add the lengths of the four sides.
The perimeter of a rectangle is found by the following formula: (Length x 2) + (Width x 2) or Length + Length + Width + Width.
The formula for the perimeter of a rectangle is: p = 2(l + w) In other words, just add all four sides. You can't calculate the perimeter of the rectangle if you know only the length.
In order to find the perimeter of a 3D rectangle you must gather the lengths of the known sides, calculate the missing rectangular values, and use the formula for perimeter.
There is no formula for a rectangle. There are formula for calculating its area, perimeter or length of diagonals from its sides, or it is possible to calculate the length of one pair of sides given the other sides and the area or perimeter, or the two lots of sides given area and perimeter and so on.
You must first calculate the width, using the formula for the area of a rectangle (plug in the numbers you know into the formula, and solve for width). Once you know this, you can plug in the numbers in the formula for a rectangle's perimeter.
no No. You need to know the length of a rectangle's sides in order to calculate the perimeter.
Square is a special case of a rectangle and the same formula may be used to find the perimeter
2(length + height)= perimeter
The formula for the perimeter of a rectangle is: p = 2(l + w) In other words, just add all four sides. You can't calculate the perimeter of the rectangle if you know only the length.
The formula to calculate perimeter of a rectangle is P=2L+2W P= 2(15) + 2(10) P= 30 +20 P = 50
perimeter of rectangle=2(l+b) l=length of the rectangle b=breadth of the rectangle
Add up all the sides of the rectangle.
You add up all of the sides of the rectangle.