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vazorg [7]
2 years ago
15

Find the area of the kite.

Mathematics
1 answer:
Alchen [17]2 years ago
8 0

Answer:

72

Step-by-step explanation:

One way to do this is to use the formula  A=\frac{1}{2}d_1 d_2  where d_1 and d_2 are the lengths of the two diagonals.

In the figure, d_1=12  and  d_2=12  (2 + 10 and 6 + 6).

The area is \frac{1}{2}(12)(12)=\frac{1}{2}144=72 square units.

Another way that doesn't depend on learning a formula is to remember that the diagonals of a kite are perpendicular, so the 4 small triangles are right triangles.  Two of the smaller triangles have base =2 and height = 6, so their areas are 1/2(2)(6) = 6.  Double that--there are 2 congruent small triangles--to get an area of 12.

There are two larger right triangles with base =10 and height = 6, so their area are 1/2(10)(6)=30.  There are two of those, so their combined area is 60.

Finally, put the small triangle area and the large triangle area together to get a total of 12 + 60 = 72

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