Express the negations of each of these statements so that all negation symbols immediately precede predicates. a. ∃z∀y∀xT (x, y,
z) b. ∃x∃yP (x, y) ∧ ∀x∀yQ(x, y) c. ∃x∃y(Q(x, y) ↔ Q(y, x)) d. ∀y∃x∃z(T (x, y, z) ∨ Q(x, y))
1 answer:
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Answer:
1.2 cm
Step-by-step explanation:
Quadrilateral circumscribing a circle is a quadrangle whose sides are tangent to a circle inside it (see attached diagram).
The area of circumscribed quadrilateral is
where is semi-perimeter and r is radius of inscribed circle.
In your case,
If a quadrilateral is circumscribed over the circle, then the sum of opposite sides is equal, so
so
Now
