Rectangle area finder how to#
Rectangle area finder free#

The area of the triangle is equal to our 'base' e times height: e × (f/2) × sin(angle) Multiply the width and length of the rectangle. What's the height of that triangle? Use the sine function. To find this rectangles area, you need to: Convert feet to inches.

Do you want to know where it comes from?ĭivide the parallelogram into two triangles, and assume that our e diagonal is the 'base' for both new triangles.

Rectangle area finder how to#

The formula comes from trigonometry as well. How to find the area of a rectangle using unit squares We can find the area of any two-dimensional shape by dividing that shape into smaller unit squares. The area of a rectangle depends on its sides. The adjacent angles in the parallelogram are supplementary, so you can choose whichever angle you want because sin(angle) = sin(180° - angle).Īrea given diagonals of a parallelogram and the angle between them Definition Formula How to Calculate the Area Area by Diagonal Derivation Solved Examples What is the Area of Rectangle Definition: Area of rectangle is the region occupied by a rectangle within its four sides or boundaries. Learn more about rectangle area with our area of a rectangle calculator.Īrea given sides and the angle between themĭoes it ring a bell? This formula comes from trigonometry and is used, for example, in our triangle area calculator – the parallelogram may be seen as two congruent triangles. The diagonal can be calculated using the Pythagorean theorem.Did you notice something? The formula for the area of a parallelogram is pretty much the same as for a rectangle! Why is it so? Have a look at the picture: a parallelogram can be divided into a trapezoid and a right triangle and rearranged to the rectangle. See the formulas to find the area for each shape below. To get the perimeter the sum of a and b is multiplied by 2 (because the opposite sides are identical). Home Math Calculators Geometry Calculators Area Calculator Calculate area by selecting a shape and entering your measurements in any metric or US customary unit. The area of a rectangle can easily be calculated by multiplying the length of side a and b. In these situations the tool will just show one of the two possible solutions. For example, a rectangle with perimeter 10 and area 6 has the sides 2 and 3, but it is unclear if it is a that is 2 and b that is 3 or if it's the other way around. If neither of them are specified there can often be multiple solutions. You can use it to find the surface area of the most common shapes. The tool therefore uses the more neutral naming, a and b. When calculating a rectangle's diagonal, perimeter and area it does not matter which side is the base and which side is the height. If all sides of the rectangle have equal lengths, we call it a square. Then calculate the area of the rectangle by multiplying the length(. Then we will define the area of rectangle A. Using our calculator can save you time and prevent calculation errors. First, we will define length L and breadth B. Simply enter the known length/width and dioganal of the rectangle, and our calculator will use the rectangle side formula to find the length of the unknown side.

Rectangle area finder free#

The lengths of its sides are denoted with a and b, while the length of the diagonal is denoted with d. /rebates/2fbasicgeometry-help2fhow-to-find-the-area-of-a-rectangle&. Use our free online calculator to find the length of the unknown side of a rectangle. The distance between the vertical sides are often called the base, while the distance between the horizontal sides are called the height. How to find the area of a rectangle The image above shows a typical rectangle. Rectangles are often depicted with the longest sides horizontally and the shorter sides vertically. The word rectangle comes from the Latin word rectangulus, a combination of rectus (right) and angulus (angle), which refers to the rectangle's four right angles (90°).

The result will be in whatever metric you did the measurement in, but squared: square mm, square cm, square dm, square meters or square inches, square feet, square yards, square miles etc. Calculating the Square Footage of Your Project Tile Size in Inches (Optional):, X Price Per Square Foot (Optional): Totals Total Sq Ft All Areas: Total. If all the sides of a rectangle have the same length it's usually called a square instead. The solution to the equation is straightforward multiplication and this is the formula used in our area of a square online calculator. A rectangle is a geometric shape with four sides where all angles are 90°.