Its radius works out as about: 6.77
So its circumference is: 2*pi*6.77 = 42.537 rounded to 3 decimal places
The formula for the area of a circle: A = πr2. 144= πr2 --> 12=πr --> 12/π = r
The circumference of a 144-inch diameter circle is about 452.4 inches. (C = d x Pi).
It is 72 units.
22.9 inches approx.
12 feet because pi*122 = 144*pi square feet
The circumference is 42.538 cm
Radius is about: 6.77 Circumference: 2*pi*6.77 = 42.537 rounded to 3 decimal places
The formula for the area of a circle: A = πr2. 144= πr2 --> 12=πr --> 12/π = r
pi*r2 = 144 m2 => radius = 6.770275003 m circumference = 2*pi*6.770275003 = 42.539 m (rounded to 3 decimal places)
The circumference of a 144-inch diameter circle is about 452.4 inches. (C = d x Pi).
area = πr2 ⇒ radius = √(area/π) circumference = 2πr = 2π√(area/π) = 2π√(144π in2/π) = 24π in
Area = pi*144 = 452.389 square cm
It is 72 units.
The radius of the circle is 21 inches. The area of the circle is (pi) times (radius squared) = pi times 441 = 1,385.44+ square inches. 1 square foot = 144 square inches. The area of the circle is (1385.44+ square inches) divided by 144 = 9.621 square feet (rounded to 3 decimal places).
The area of a circle is equal to pi times the radius squared. A 12 foot radius circle would have an area of exactly 144 pi square feet.
22.9 inches approx.
452.389 square miles this is assuming he can see in every direction. it can be thought of like a circle, where the fire tower is the center of a circle with a radius of 12 miles. he can see everywhere inside this circle making his vision the area of the circle. an area of a circle is A=pi*r2