Pi (π) is one of the most important and
fascinating numbers in mathematics.
Roughly 3.14, it is a constant that is used to calculate the circumference of a circle from that circle's radius or diameter. It is also an irrational number, which means that it can be calculated to an infinite number of decimal places without ever slipping into a repeating pattern. This makes it difficult, but not impossible, to calculate precisely.
Answer:
Step-by-step explanation:
a) V= A*h V=40*8=320
b) V=800 and h=20
A=V/h=800/20=40
Mathematics is the queen of all science because every branch of science needs proof and we can prove it by mathematics. Mathematics is an essential component of the scientific method (data collection and observation and hypotheses are sustained by relevant mathematical models) , and mathematics is the language in which the Natural Physical World is written. Can anyone imagine physics without numbers , or without derivatives , integrals , equations , tensors , geometrical figures. Physics would be a barren field of study based
<h3>(a) The square</h3>
For all rectangles, the area is the length multiplied by the height. For squares (a special type of rectangle), the length and height are the same, so you just use 
, where 
is the side length.
<h3>(b) The circle</h3>
The formula for the area of the circle is 
, where 
is pi, a constant, and 
is the radius of the circle, or the length from the center point to the edge.
We're given the side length of the square, which is the same as the diameter of the circle (length from edge to edge going through the center point). Divide the diameter by 
to get the radius of 
kilometers.
<h3>(c) The blue section</h3>
The area of the blue section is simply the area of the square minus the area of the circle since we just want what's left over.
You can keep the answer exact (the boxed expression) or use the approximate value of 54.9, depending on the instructions for the assignment.
