Step-by-step explanation:
If the two chords are congruent, then they must be equidistant from the centre of the circle.
Answer: <u><em>D) They must be perpendicular</em></u>
A is rejected because the chord might not pass through the center of the circle.
B is rejected because the chords are not obligated to be parallel.
C is rejected because it is not compulsory for the chords to be perpendicular.
I think the second oneis gas and the third one is liquid
Answer:
A = 139.25
Step-by-step explanation:
Answer:
Yes, the number 400 is a perfect square. A perfect square is a number that can be expressed as the product of two equal integers.
Step-by-step explanation: