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You have put 3.14 at the end of this question.
Thus, assuming your question asks you to use pi = 3.14 (which is only a rough approximation), we calculate the radius by putting the values into the following formula:
Area (of a circle) = Pi * r2 (where r is the radius)
So if we put in our figures we get:
9 = 3.14 * r2
To calculate the value of r, we can re-arrange this to:
r2 = 9/3.14
Thus r = (9/3.14) 1/2 (i.e. r is equal to the square root of 9 divided by 3.14)
Thus r = 1.69 (to 2 decimal places only)
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What is the area of a circle with a radius of 9 centimeters?
The area of a circle with a radius of nine centimeters is: 254.5 cm2
What is the area of a circle if the radius is 9 In?
Area of a circle of radius r = πr2Area of circle of radius 9 In = π(9)2 = π x 81 , putting value of pi we get= 3.14159625 x 81 = 254.46 sq. In
If The exact area of a circle is 81pi square inches what are the radius and diameter of the circle explain?
The radius is 9 inches because area of circle is pi*9 squared = 81pi square inches and the diameter is twice the radius which is 2*9 = 18 inches
What is the area of a 6 dia circle?
Area = pi * radius^2. radius = diameter / 2, so radius of this circle is 3.Area = 9 * pi (take your favorite value of pi: 3.1416....)
What happens to the area of a circle when you triple the radius?
As the area of a circle is pi*radius2 the increase in area is a factor of 32. So tripling the radius gives an increase in area by a factor of 9.
What is the area of a circle with a radius of 9 ft?
A circle with a radius of 9 feet has an area of 254.47 square feet.
What happen to the area of circle when the radius is tripled?
If you triple the radius of a circle, the area will increase by 9. Area is proportional to the square of the radius.
What is the area of a circle with a radius of 9 centimeters?
The area of a circle with a radius of nine centimeters is: 254.5 cm2
What is the area of a circle if the radius is 9 In?
Area of a circle of radius r = πr2Area of circle of radius 9 In = π(9)2 = π x 81 , putting value of pi we get= 3.14159625 x 81 = 254.46 sq. In
What is the area of a circle if r9ft?
A circle with a radius of 9 feet has an area of 254.47 square feet.
If The exact area of a circle is 81pi square inches what are the radius and diameter of the circle explain?
The radius is 9 inches because area of circle is pi*9 squared = 81pi square inches and the diameter is twice the radius which is 2*9 = 18 inches
What is the area of a circle with a 9 inch radius?
The area is 254.47 in2
What is the radius of a circle whose area is 254.47 square feet?
The radius is 9 feet.
What happens to the area of a circle if you triple a radius?
When you triple the radius of the circle . . . -- The diameter also triples. -- The circumference also triples. -- The area is multiplied by 9 .
What happens to the area of a circle when the radius is triple?
The area increases as the square of the radius (or diameter). So if you double the radius you * 4 (quadruple) the area. Treble the radius, you *9 the area.
If a circle as the radius of 9 cm what is its area?
The answer is 254.469005cm squared
What is radius of circle with area of 254 meters squared?
9
