What is the formula for finding the area of a square or rectangle?

What is the formula for finding the area of a square or rectangle?

To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area. This is the same as saying length2 or length squared.

What is the formula for calculating the perimeter of a rectangle?

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.

What is the formula for calculating the area of a square?

The area of a square is calculated with the help of the formula: Area = s × s, where, ‘s’ is one side of the square. Since the area of a square is a two-dimensional quantity, it is always expressed in square units.

What is the equation of 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.

What is the formula to calculate perimeter?

The formula for the perimeter of a rectangle is often written as P = 2l + 2w, where l is the length of the rectangle and w is the width of the rectangle. The area of a two-dimensional figure describes the amount of surface the shape covers. You measure area in square units of a fixed size.

How do you find the diagonal of a rectangle?

You can find the diagonal of a rectangle if you have the width and the height. The diagonal equals the square root of the width squared plus the height squared.

How do you calculate the dimensions of a rectangle?

Method 1 of 3: Using the Length and the Width Set up the formula for the Pythagorean Theorem. You use the Pythagorean Theorem because a diagonal of a rectangle cuts the rectangle into two congruent right triangles. Plug the length and the width into the formula. These should be given, or you should be able to measure them. Square the length and width, then add these numbers together.

What is a perfect square formula?

When a polynomial is multiplied by itself, then it is a perfect square. Example – this polynomial ax 2 + bx + c; if b 2 = 4ac is a perfect square. Perfect Square Formula is given as, (a+b) 2 = a 2+2ab+b 2.

What is the formula for the surface area of a rectangle?

Formula for area of a rectangle. The surface area of a rectangle can be found by the formula. Surface area of a Rectangle = L × B, where L is the length of the Rectangle and B is the breadth of the rectangle. The unit for the surface area of a rectangle is cm 2 or m 2.

What is the formula for the diameter of a rectangle?

Use the Pythagorean theorem , H squared = A squared + B squared, to determine the length of the diagonal and thus calculate the diameter of a rectangle. Examine the T-square and make sure the two pieces meet at a 90 degree angle.