This video shows how to compute the area of a rectangle given the length of one of its sides and its diagonal. First start by drawing the picture of the rectangle. Now draw the diagonal and label the known lengths. In the diagram, the diagonal and two sides of the rectangle form a rightangled triangle. The breadth of the rectangle can be computed using the Pythagorean theorem. Finally, compute the area of the rectangle by multiplying its length to its breadth.
 Hot
 Latest

How To: Remember "greater than" & "less than" symbols

How To: Find the formula of a given sequence

How To: Find the Percent Given Two Numbers

How To: Find a missing side of a triangle, similar to another

How To: Solve equations with fractions and decimals

How To: Understand the differences / similarities between squares, rectangles & rhombi

How To: Evaluate functions by substituting in the variable to the input given

How To: Understand basic probability with examples

How To: Calculate Faster Than a Calculator

How To: Convert Fahrenheit to Celsius with a formula

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Calculate the area of a parallelogram

How To: Find the Radius of a Circle from Arc Length

How To: Find the area & perimeter of triangles & squares

How To: Determine the age of a fossil using carbon14

How To: Multiply proper & improper fractions

How To: Find the area of an oblique triangle using formulas

How To: Derive the area of a circle

How To: Find how many toothpicks will be needed to form the nth figure in a sequence

How To: Factor a trinomial with negative leading coefficient

How To: Remember "greater than" & "less than" symbols

How To: Find the formula of a given sequence

How To: Find the Percent Given Two Numbers

How To: Find a missing side of a triangle, similar to another

How To: Solve equations with fractions and decimals

How To: Understand the differences / similarities between squares, rectangles & rhombi

How To: Evaluate functions by substituting in the variable to the input given

How To: Understand basic probability with examples

How To: Calculate Faster Than a Calculator

How To: Convert Fahrenheit to Celsius with a formula

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Calculate the area of a parallelogram

How To: Find the Radius of a Circle from Arc Length

How To: Find the area & perimeter of triangles & squares

How To: Determine the age of a fossil using carbon14

How To: Multiply proper & improper fractions

How To: Find the area of an oblique triangle using formulas

How To: Derive the area of a circle

How To: Find how many toothpicks will be needed to form the nth figure in a sequence

How To: Factor a trinomial with negative leading coefficient
Be the First to Comment
Share Your Thoughts