find the area of a circular flower bed whose diameter is 6 meters use pie =3.14 as an approx value?
915477
PI is not spelled like the pie you eat. \n\nThe area of a circle is found by multiplying pi (3.14) by the radius squared. The radius is half of the diameter so it is 3. the radius squared is 9, so multiply that by pi and get 28.26\n\nthe area is 28.26 square meters
714329
Area = pi*r^2 = pi*3^2 = 9pi. Thats 28.27 square feet, approx.
568696
rare gem's answer is right..given the radius you'll just need to compute for the area using the formula right?\n\nArea=(radius^2)(pi)\n    = (5)(5)(pi)
74729
The formula for the area of a circle is:\nPi*r^2/2\nto translate, "one half of Pi times the suare of the radius"\n\nSo, if you have a 3 cm radius:\n(3 cm)(3 cm) = 9 cm^2\n\nthen divide by two:\n9 cm^2 /2 = 4.5 cm^2\n\nthen multiply by Pi:\n\n4.5(Pi) cm^2\n\nIf you want a decimal number, you can use an estimation of Pi, something like 3.1415, but it's not exact since Pi is an irrational number (a non-ending and non-repeating decimal)
1159815
it's pi x 18\n\nbecause \n\nr = 6\n\nand aera is pi x r^2\nso 1/2 the area will be 1/2 x pi x r^2\n\nwhich is 1/2 x pi x 6^2 \n\nwhich is 1/2 x pi x 36\n\nwhich is 18 x pi or approx 56.55
130046
Half of the diameter.\n\nor\n\nMeasure around it.  Divide that number by 3.14.  Then divide by 2.
375776
In a square: multiply lenght by wittd.\n\nIt all revolves around that\n\nTriangle: base * height /2\n\nCircle: pi ( the matematical value - 3.1416 ) * radius^2\n\nThose are the basic formulae
338526
diameter x pi\npi=3.14159...\n\nthat's it
1161256
Pi X D^2   so 3.1415 X (4.5)^2 = 63.61 Ft^2
543954
1/3 x pie x radius (power of 2) x height
392733
Divide the circumference of a circle its diameter.
406577
it's approximately 6 m.\n\nthe formula that relates diameter and circumference is:\n\nCircumference = pi * diameter\n\n18.85 = 3.14 * d\n\n18.85/3.14 = d\n\n6.00 = d  <-- answer
48612
Let r be the radius of the circle and s the length of the square's sides.\ncircle perimeter=2*pi*r, square perimeter=4*s\n2*pi*r=4*s => s=pi*r/2\ncircle area=pi*r^2, square area=s^2\ns^2=(pi*r/2)^2=pi^2*r^2/4\nBut pi<4 => pi^2*r^2/4<pi*r^2 => square area < circle area
711674
the circumference of a circle is the diameter * pi.\n\nor...\n\nC = d * 3.14
898007
It is said that the area of a circle is Pi R square.  Pie are not square. Pie are round, cornbread are square.
71760
area := Πr2\ncircumference := Πd  ,  r=radius, d=diameter, Π=3.14128....
680200
Assuming this means a circle...\n\ndefn/:\n\nc=circurmfernce\nA=area\nr=radius\nd=diameter\npi=pi (~3.1415926...)\nd=2*r\n\nC=2*pi*r=d*pi\nA=pi*(r^2)...(area is pi*r squared...pie are squared-no there not their round).\nA=pi*(d^2)/4.\n\njust plug and chug...\n\nC=10*pi.\nA=25*pi.\n\nanswer:\n\nit's that simple