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Remember the Area of a Circle equal 'pi' multiplied to radius squared.
Algebraically.
A = pi r^(2)
Hence
r^(2) = A/pi
r = sqrt(A/pi)
Substituting
r = sqrt( 121 pi / pi )
Cancel down by 'pi'
r = sqrt(121)
r = 11 cm
What else can I help you with?
What is the area of a circle with radius 5.2cm?
Remember and commit to memory ' Area of a circle equals 'pi' multiplied to radius squared. Algebraically A = pi r^(2) For learning purposes pi always equals '3.14'. Hence A = 3.14 X (5.2 cm)^(2) A = 3.14 X 27.04 cm^(2) A = 84.9056 cm^(2).
What is the area of a circle if the the radius is Cm?
Area of a circle in square cm = pi*radius squared
AC equals 14 cm DB equals 8 cm What is the area of this rhombus?
56 cm squared
What is the radius of 12.7 cm?
The radius of a circle is half of its diameter. If you have a diameter of 12.7 cm, the radius would be 12.7 cm divided by 2, which equals 6.35 cm. Therefore, the radius is 6.35 cm.
What is the radius of 18cm?
The radius of a circle is half of its diameter. If the diameter is 18 cm, then the radius would be 18 cm divided by 2, which equals 9 cm. Thus, the radius is 9 cm.
What is the radius of the area 345cm2?
Since area equals Pi times radius squared take and substitute what is known. 345 equals Pi times the radius squared. divide Pi into both sides for 109.8 equals the radius squared. Now take the square root of 109.8 to get an r of 10.47936 cm.
What is the area of a circle with radius 5.2cm?
Remember and commit to memory ' Area of a circle equals 'pi' multiplied to radius squared. Algebraically A = pi r^(2) For learning purposes pi always equals '3.14'. Hence A = 3.14 X (5.2 cm)^(2) A = 3.14 X 27.04 cm^(2) A = 84.9056 cm^(2).
What is the area of a circle if the the radius is Cm?
Area of a circle in square cm = pi*radius squared
What is the radius of a circle with an area of 8.3 cm squared?
1.63 cm
If a circle as the radius of 9 cm what is its area?
The answer is 254.469005cm squared
AC equals 14 cm DB equals 8 cm What is the area of this rhombus?
56 cm squared
Radious equals 5inch andheigh equals 15m what is its volume?
9474.76 cm squared 3730.22 in squared
What is the radius of 12.7 cm?
The radius of a circle is half of its diameter. If you have a diameter of 12.7 cm, the radius would be 12.7 cm divided by 2, which equals 6.35 cm. Therefore, the radius is 6.35 cm.
If the radius of a circle is 5 cm what is the diameter?
if a radius is 5cm the diameter is 10cm rule- you double the radius
What is the radius of 18cm?
The radius of a circle is half of its diameter. If the diameter is 18 cm, then the radius would be 18 cm divided by 2, which equals 9 cm. Thus, the radius is 9 cm.
How many inches square is 630 cm squared?
630 cm squared equals 97.65 inches square.
If the surface area is 120 cm squared what's the radius?
60cm
