What is the area of a circle with radius of 12 meters?
2007-04-20 13:41:14 · 19 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Area of a circle formula
A = π r²
A = 3.141592654(12)²
A = 3.141592654(144)
A = 452.3893421 Square meters
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2007-04-20 13:50:15 · answer #1 · answered by SAMUEL D 7 · 0⤊ 2⤋
Radius = 1/2 of diameter. = [1.3 x 10^-12] / 2 = (1.3/2) x 10^-12 =0.65 x 10^-12 meters 2nd question ) Base b = 3x+2 mtrs Height h = 2x+3 mtrs area = base x height (bxh) = (3x+2) (2x+3) =3x(2x+3)+2(2x+3) =6x^2 +9x+4x+6 =6x^2+13x+6 This is the trinomial which is required
2016-05-19 23:57:42 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Area = pi * r squared
12 x 12 = 144
3.1416 x 144 = 452.39
2007-04-20 13:45:09 · answer #3 · answered by shanusav 2 · 0⤊ 0⤋
equation of area of a circle is: A = pi * radius squrared
1. given the diameter find the radius
2. then stick it into the equation
A = pi * 6 squared
= 36 pi
2007-04-20 18:05:33 · answer #4 · answered by prettygoddessgirl 2 · 0⤊ 1⤋
Pi R Squared
2007-04-20 13:43:41 · answer #5 · answered by NotreDameGirl 3 · 0⤊ 1⤋
r = 12
Area of the circle is A = phi * r ^2
A = phi ( 12) ^2
A = phi ( 144) or 144 phi
also if we aprox. phi = 3.14......
then A = 452.38934211693022633862064719225 sq. meter
2007-04-20 13:50:44 · answer #6 · answered by arthur 1 · 0⤊ 0⤋
452.38 m2. The Formula is pi times the radius squared.
2007-04-20 13:48:57 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Area = 452 square meters (to 3 significant figures)
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Solve
A = Pi times r squared
where A is the area, and r is the radius.
r = 12 m
For simplicity, we use Pi = 3.14
A = (12 m) squared times Pi
= (12 m) (12 m) times Pi
= 452.16 square meters
2007-04-20 14:03:06 · answer #8 · answered by g p 6 · 1⤊ 0⤋
144 x pi
2007-04-20 13:43:38 · answer #9 · answered by Anonymous · 0⤊ 0⤋
144pi square meters
that is to say 144 x 22/7
or 144 x 3.14
2007-04-20 13:45:22 · answer #10 · answered by VampireDog 6 · 0⤊ 1⤋