Answer:
One
Step-by-step explanation:
For unique triangles with 3 sides, the sum of the two shorter sides must be greater than the third side.
Shorter sides: 6 cm and 2.5 cm
Longer side: 6.5 cm
6 + 2.5 = 8.5
As 8.5 > 6.5 this is a unique triangle
As the side lengths are fixed, only one unique triangle can be formed.
Answer:
$519.43
Step-by-step explanation:
bc it is
The external angle of a polygon can be found with the following formula:

n is the amount of sides to the polygon.
There are 9 sides to this polygon. Plug this value into the equation:

The exterior angle of a polygon is 140.
There is an equilateral triangle that affects segment JKL. The exterior angle and the angle of two of the sides of the equilateral triangle are added in this case.
An equilateral triangle always has angles of 60-60-60. Therefore, you can find the angle of JKL with the following equation:

The maximum angle of a line is 180. The angles combined together are 200, so you will have to subtract the difference of 200 and 180 from the combined angles.
The angle of line JKL is
160 degrees.
Answer:
79
Step-by-step explanation:
To find the value of
, when x = 3, simply plug in the value of x in the expression and solve as follows:




The value of
, when x = 3, is 79
I hope this helps you
square one side a
Area=a.a
49=a.a
7.7=a.a
a=7
Perimeter=4a=4.7=28