The area of a kite is half the product of the diagonals.

The diagonals of the kite are the height and width of the rectangle it is superimposed in, and we know that because the area of a rectangle is base times height.

Therefore our equation becomes:

．

We also know the area of the rectangle is．Substituting this value in we get the following:

Thus,, the area of the kite is．

The Quadrilateralis shown below with its diagonalsand．

．We call the point of intersection:

The diagonals of a quadrilateral with two pairs of adjacent congruent sides - akite- are perpendicular; also,bisects theandangles of the kite. Consequently,is a 30-60-90 triangle andis a 45-45-90 triangle. Also, the diagonal that connects the common vertices of the pairs of adjacent sides bisects the other diagonal, making的中点．Therefore,

．

By the 30-60-90 Theorem, sinceandare the short and long legs of,

By the 45-45-90 Theorem, sinceandare the legs of a 45-45-90 Theorem,

．

The diagonalhas length

．

In order to solve this problem, first observe that the red diagonal line divides the kite into two triangles that each have side lengths ofandNotice, the hypotenuse of the interior triangle is the red diagonal. Therefore, use the Pythagorean theorem:, wherethe length of the red diagonal.

The solution is:

To solve this problem, apply the formula for finding the area of a kite:



However, in this problem the question only provides information regarding the exact area. The lengths of the diagonals are represented as a ratio, where


Therefore, it is necessary to plug the provided information into the area formula. Diagonalis represented byand diagonal．

The solution is:











Thus, if, then diagonalmust equal

This problem can be solved by applying the area formula:



Since this question provides the area of the kite and length of one diagonal, plug that information into the equation to solve for the missing diagonal.

Thus the solution is:

This problem can be solved by applying the area formula:



Since this question provides the area of the kite and length of one diagonal, plug that information into the equation to solve for the missing diagonal.

Thus the solution is:

First find the length of the missing diagonal before you can find the sum of the two perpendicular diagonals.

To find the missing diagonal, apply the area formula:




This question provides the area of the kite and length of one diagonal, plug that information into the equation to solve for the missing diagonal.










Therefore, the sum of the two diagonals is:

You must find the length of the missing diagonal before you can find the sum of the two perpendicular diagonals.

To find the missing diagonal, apply the area formula:




This question provides the area of the kite and length of one diagonal, plug that information into the equation to solve for the missing diagonal.










Therefore, the sum of the two diagonals is:

To find the length of the black diagonal apply the area formula:



Since this question provides the area of the kite and length of one diagonal, plug that information into the equation to solve for the missing diagonal.

Thus the solution is:

This problem can be solved by applying the area formula:



Since this question provides the area of the kite and length of one diagonal, plug that information into the equation to solve for the missing diagonal.

Thus the solution is: