What is the measure of the radius of the circle?
Just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet. You can also use the circumference and radius equation.
What is the area in terms of pi?
The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.
How do you calculate terms of pi?
Give your answer in terms of pi? Answer: Square the radius and multiply by Pi. 15^2 is 225, so the answer is 225Pi. Just leave the pi are the end of the number.
What is the most useful number?
The 13 Most Important Numbers in the Universe
- The Universal Gravitational Constant. Getty Images.
- The Speed of Light. Michael Duva/Getty Images.
- The Ideal Gas Constant. imagenaviGetty Images.
- Absolute Zero. ESA/NASA.
- Avogadro’s Number. Lawrence Lawry/Getty Images.
- The Relative Strength of Electricity and Gravity.
- Boltzmann’s Constant.
- Planck’s Constant.
How did Archimedes calculate pi?
Archimedes’ method finds an approximation of pi by determining the length of the perimeter of a polygon inscribed within a circle (which is less than the circumference of the circle) and the perimeter of a polygon circumscribed outside a circle (which is greater than the circumference).
Who found pi?
Archimedes of Syracuse
What are the two types of real numbers?
Different types of real numbers
- Natural numbers: These are real numbers that have no decimal and are bigger than zero.
- Whole numbers: These are positive real numbers that have no decimals, and also zero.
- Integers: These are real numbers that have no decimals.
Which number is the smallest?
0
What set of numbers does 4 belong to?
Natural Numbers (N), (also called positive integers, counting numbers, or natural numbers); They are the numbers {1, 2, 3, 4, 5, …} Whole Numbers (W). This is the set of natural numbers, plus zero, i.e., {0, 1, 2, 3, 4, 5, …}.
How do you classify numbers?
The classifications of numbers are: real number, imaginary numbers, irrational number, integers, whole numbers, and natural numbers. Real numbers are numbers that land somewhere on a number line. Imaginary numbers are numbers that involve the number i, which represents \sqrt{-1}.
How do you classify natural numbers?
The natural numbers, also called the counting numbers, are the numbers 1, 2, 3, 4, and so on. They are the positive numbers we use to count objects. Zero is not considered a “natural number.”
What type of number is 25 747?
The number 25,747 is a whole, rational, positive, integer, and also a natural number.