Search over 10,000 free study notes

12² = 4² + x² [This is pythagoras' theorem (a² = b² + c²) ]
144 =16 + x ^2
128 = x²
11...

d (3 + xy) = 4
d = 4/(3 + xy)

Firstly, we will find the volume of the cylinder using the formula V_cylinder =π r²h . Inputting the numbers given in the question gives V_cylinder = 36π.Given that V_cylinder = V_cone, and usi...

When asked to solve we have to find the value of x and the value of y, as they are simultaneous equations we know the value of y in equa...

First, we need to remove one of the variables from one of the equations. In this case, we multiply the first equation by 4 to give 12x+4y=28.Then minus the 2nd equation from this to give 10x+0y=20.Now div...