The question asks about the "following". In those circumstances would it be too much to expect that you make sure that there is something that is following?
It is the one of the "following" (which you failed to include) which says: (x+3)²+(y-5)²=36
You mentally divide by 10 (by shifting the comma) and then multiplicate the result by 2.
3
The area of a circle is found by the equation pi times r2. To calculate the radius from the area we need to divide the area by pi and get the square root of the result. if we use 3.1418 as a close approximation of pi, we get 706.9 ÷ 3.1418 = 225 and the square root of 225 = 15.
The result is 0.
It means to ascertain that the equation you are given is actually true by manipulating one of the two sides to reach the desired result.
It is the solution of the equation
There is no result because there is no equation, only an expression.
It will result to the circle's radius.
The general equation for the area of a circle is A = [Pi]r2. Since the radius, r, is one half the diameter, divide the diameter by two and substitute that result for rin the equation. Alternatively, you could use this equation instead: A = [Pi]d2 / 4. The value of Pi is 3.14. If you need greater precision, you could use 355/113, which is accurate to six -- count 'em, six! -- decimal places.
The general equation for the area of a circle is A = [Pi]r2. Since the radius, r, is one half the diameter, divide the diameter by two and substitute that result for rin the equation. Alternatively, you could use this equation instead: A = [Pi]d2 / 4. The value of Pi is 3.14. If you need greater precision, you could use 355/113, which is accurate to six -- count 'em, six! -- decimal places.
The answer
The formula for the area of a circle is: Area = (pi) x (Radius)2 . When you know the radius of the circle and you use it to calculate the area of the circle, the result will be equal to (pi) x (Radius)2 .
You mentally divide by 10 (by shifting the comma) and then multiplicate the result by 2.
The products.
solution
First the circle diameter must be given. for example, for a semi circle of diameter 8 centimeters:Step 1: the circumference of the full circle (= pi x Diam). result is: 25.12 cmStep 2: Divide the circumference in half. This is the length of just the curved part of the semi-circle. result: 12.56 cmStep 3: Add the diameter to the result of step 2.Step 4: The result is 12.56 + 8 = 20.56 cm. This is the perimeter of the semi-circle!Note point: There are 360 degrees in a circle, so a quarter of a circle has 90 degrees no matter what size the circle is. Half a circle has 180 degrees.
Find the diameter, then multiply that by Pi (about 3.1416). The result is the circle's circumference.