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I will base the answer on the assumption you mean the 12-sided 50-cent coin.
A first approximation will assume that the coin is round, and use half a line that connects two opposing vertices as the diameter d, and then the area is pi*d^2/4. The diameter being 31.51 mm, we get 7.79 cm2 A more accurate answer will consider the coin as a regular dodecagon, that is 12 isosceles triangles whose long side's length is the circle's radius i.e. 15.25 mm, and each have a top angle of 360/12 degrees = 30 degrees. The formula in the links gives here
3*d^2/4 = 7.4466 cm2
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Which animal is on the Australian 20 cent coin?
The Australian 20 cent coin features a platypus on the reverse.
What do you call a five cent coin?
A five cent coin is generally called a nickel.
What four coins equal 80 cents?
A 50 cent coin and three 10 cent coins.A 50 cent coin, a 20 cent coin and two 5 cent coins.Four 20 cent coins.
What weight is a 5 cent coin?
The U.S.A. 5 cent coin is 5 gram Other countries also use a 5 Cent coin though, and it was not mentioned in the question which country. Example: the Australia 5 cent coin is 2.83 gram
What is on a 1cent coin?
Lincoln is on the 1 cent coin
Calculate the area of Australian 50 cent coin?
300 mm
What was the area of the 1966 Australian 50 cent coin?
The 1966 Australian 50 cent coin has a diameter of 31.5mm. The area of one side of the coin is 779.3 square mm.
Is the Australian 10 cent coin smaller than the Australian 20 cent coin?
Yes, the 10 cent coin is smaller. The Australian 10 cent coin is 23.60 mm in diameter. The Australian 20 cent coin is 28.52 mm in diameter.
Who is on the Australian 20 cent coin?
on the Australian 20 cent coin it the platypus
What picture does a Australian 5 cent coin have?
The Australian 5 cent coin has an echidna on it?
When was Australian five-cent coin created?
Australian five-cent coin was created in 1966.
When was Australian twenty-cent coin created?
Australian twenty-cent coin was created in 1966.
What flower is on the back of an Australian 50 cent coin?
There is no flower on the reverse of an Australian 50 cent coin.
What is the value of a 1957 Australian 10 cent coin?
Such a coin does not exist. The first Australian 10 cent coin was issued in 1966.
Which animal is on the Australian 20 cent coin?
The Australian 20 cent coin features a platypus on the reverse.
What is the value of a 1956 Australian 2 cent coin?
Such a coin does not exist. The Australian 2 cent coin was first issued in February 1966.
What animal is on a ten cent coin?
The lyrebird is on an Australian ten cent coin.
