Answer:
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Step-by-step explanation:
A real number is rational, if it is the ratio of two integers. Otherwise it is called irrational. If D<span> is the diameter of circle, then </span>C<span> = </span>π D<span> is it's circumference.</span>
The answer is 254.35 in square
About 145 I gonna guess I dont know if that's right
Answer: Telescopes use lenses or mirrors to collect and focus waves from the electromagnetic spectrum, including visible light, allowing us to look at celestial objects. By studying the electromagnetic waves given off by objects such as stars, galaxies, and black holes, astronomers can better understand the universe.
Step-by-step explanation: