Answer
The statement does not make sense.
Work Step by Step
The area of a circular pizza is calculated by the formula\[A=\pi {{r}^{2}}\]. The area is proportional to the square of the radius. If the radius is doubled, the area becomes four times.
If \[\$10\] is given for a pizza of a particular radius, for twice the radius, as the area becomes four times, \[\$20\] will not be given. \[\$40\]should be the price of such a pizza if we take only area of the pizza into consideration.
