Answer:
2.547
Step-by-step explanation:
2pir=8
1.273=r
d=2r
2.547=d
Just substitute - 2 into x and solve.
Answer:
16
Step-by-step explanation:
If
, just put the number
instead of
.
So:

First let's see what does irrational mean.
An irrational number is any number that cannot be written as a fraction of whole numbers. The number pi and square roots of non-perfect squares are examples of irrational numbers. ... , however, is not a perfect square, and its square root, therefore, is irrational.
<h2>
Now, the answer to your question. </h2>
√2 is an irrational number since it cannot be written as a ratio of two integers.
look at the picture below to see why√2 is an irrational number
<u />
Please mark me brainliest if this helped.