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Here we are given the surface are of a cuboid box and the dimensions of the box with an unknown variable. Well the total surface area of a cuboid, is going to be the surface area of each of the faces of i...
The equation of the area of a circle is A = pi*(r^2) Therefore seeing as we have got the area we must work backwards to be able to answer this question. First we shall start off with substituting into the...
We are going to try to eliminate one of the variables in one of the equations. This can be done by rearranging the second equation to x=20-4y. And then substituting x into the first equation.3x+2y=20 =>...
The formula for the area of a circle is π r2. To use this formula we first need to find r, the radius of the circle. The radius is the distance from the centre of the circle to the edge, and...
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