The formula for area of a circle is: πr^2
r is half the diameter.
FE is the diameter: r = 20/2 = 10
Area of circle using FE = π10^2 = π * 100 = 314 square meters.
BE is a radius:
Area = π3.5^2 = π * 12.25 = 38.465 = 38.5 square cm ( rounded to nearest tenth).
AB is a radius:
Area = π11^2 = π * 121 = 379.94 = 380 square feet ( rounded off).
EF is a diameter
r = 12/2 = 6 meters
Area = π6^2 = π * 36 = 113.04 = 113 square meters ( rounded off).
If FE measures 20 meters, the approximate area of circle B is 314 m²
if be measures three point five centimeters, the approximate area of circle B is 38.47 cm²
If AB measures eleven feet, the approximate area of circle B is 379.94 feet²
If EF measures twelve meters, the approximate area of circle B is 113.04 meters²
The image in the attached image is a circle. A circle is a bounded figure which points from its center to its circumference is equidistant.
Area of a circle : πr²
Where
π = pi = 3.14
r = radius. A radius is half of a diameter
Area when FE measures 20 meters
FE is the diameter of the circle. In order to determine the radius, divide the diameter by 2
Radius = 20 /2 = 10 meters
Area = 3.14 x 10² = 314 m²
Area when BE is 3.5 cm
BE is the radius
Area = 3.14 x 3.5² = 38.47 cm²
Area when AB is 11 feet
AB is the radius of the circle
Area = 3.14 x 11² = 379.94 feet²
Area when EF is 12 meters
EF is the diameter. The radius of the circle can be determined by dividing the diameter by 2
Radius = 12 / 2 = 6 meters
Area = 3.14 x 6² = 113.04 meters²
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