Table of Contents
How do you find the length and of a rectangle when given the perimeter?
In the same way, if the perimeter and the width are known, the length can be calculated using the formula: Length(L) = P/2 – w. Where P = perimeter of the rectangle; and w = width of the rectangle.
What is the area of a perimeter of 84?
Given : perimeter = 84 cm . Side = 21 cm. Area of the Square = 441 sq cm.
How do you find the perimeter of a rectangular garden?
To find the perimeter of a rectangle, add the lengths of the rectangle’s four sides. If you have only the width and the height, then you can easily find all four sides (two sides are each equal to the height and the other two sides are equal to the width). Multiply both the height and width by two and add the results.
How do you find the length and width of a rectangle when only given the perimeter and area?
To find the width, multiply the length that you have been given by 2, and subtract the result from the perimeter. You now have the total length for the remaining 2 sides. This number divided by 2 is the width.
What is the maximum area of a rectangle with a perimeter of 36?
The dimensions of a rectangle with perimeter 36 cm have to be determined that maximize the area without using calculus. The length of the required rectangle has a length equal to 9 and the width is 18 – 9 = 9. The required rectangle is a square with sides equal to 9 cm and the maximum area is 81 cm^2.
What is area formula?
The most basic area formula is the formula for the area of a rectangle. Given a rectangle with length l and width w, the formula for the area is: A = lw (rectangle). As a special case, as l = w in the case of a square, the area of a square with side length s is given by the formula: A = s2 (square).
How do you find the width of a rectangular garden?
What is the formula for perimeter?
Perimeter, Area, and Volume
| Table 1 . Perimeter Formulas | ||
|---|---|---|
| Shape | Formula | Variables |
| Square | P=4s | s is the length of the side of the square. |
| Rectangle | P=2L+2W | L and W are the lengths of the rectangle’s sides (length and width). |
| Triangle | a+b+c | a,b , and c are the side lengths. |