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contestada

83. A given circle has a
circumference of x units and an
area of x square units. Which of
the following statements must be
true?
0
OA) The circle's radius is 1
unit.
OB) The circle's radius is 2
units.
OC) The circle's diameter is
exactly of its
circumference.
OD) The circle's radius is
exactly of its
circumference.

Respuesta :

yungsherman
Answer: the circles radius is 2

The equation for circumference of a circle is 2*pi*r
And the equation for the area of a circle is pi*r^2

The only way both of these equations can be true is if 2r(pi)=(pi)r^2
Or
2r=r^2

And when is the square of a number equal to two times the number? When the number is 2

So the radius must be 2

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