The formula for the area of a triangle is area= 
. So when you plug in the given values: Area= 
. When you convert all the numbers to fractions: Area= 
. You multiply across the numerators and divide by the product of the denominators and get 137.25 
.
X (1 / 8) = - 3 / 2, then x is equal to
2 answers:
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The correct option is: A. 80 cm³
Explanation
Diameter of the coin, cm.
So, the radius, cm.
As the coin is circular, so..
Area of each circular surface, cm²
Now for finding the amount of plastic for making each coin, we will find the Volume of each coin first.
As the thickness () of the coin is 0.5 cm, so Volume of each coin,
As you need to make a batch of 50 coins, so the total volume of 50 coins [Rounded up to the nearest multiple of 10 cm³]
So, the amount of plastic you will need for making a batch of 50 coins is 80 cubic centimeter.