Answer:
1.2 cm
Step-by-step explanation:
The area of sircumscribed quadrilateral over a circle is equal to

where s is semi-perimeter of the quadrilateral and r is the radius of the circle.
Use property of circumscribed quadrilateral: The sums of the opposite sides are equal.
So, if the sum of two opposite sides of the circumscribed quadrilateral is 10 cm, then the sum of another two sides is also 10 cm and the perimeter of the quadrilateral is 20 cm. Hence,

Now,

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Answer:
no
Step-by-step explanation:
every triangles degrees equal 180.
78+21=99
180-99=81
the smaller triangle
21+80= 101
180-101=79
so the degrees are different

Solve for x by cross multiplication


- Swap the sides of equation

- Divide both sides of equation by 30
