4) The area of a circular pizza is a function of the radius of the pizzaDependent Variable:Independent Variable:5) The number of people shopping is a function of the weather.Dependent Variable:Iederendent Variable0) Shoe size is a function of the length of a person's foot.Denendent Variable:Independent Variable:​

Answer:a) Independent Variable   :   Radius of the pizza.b) Independent Variable   :  Weatherc) Independent Variable    :​ Size of the person's foot.Step-by-step explanation:Independent Variable:  The quantities whose value is not dependent on the other values of the experiment are called independent variable.Their change does not reflect change in other quantitiesDependent Variable: The quantities whose value is dependent on the other values of the experiment are called dependent variable.Change in other quantities implies change in the dependent variables.Now, A) The area of a circular pizza is a function of the radius of the pizza Dependent Variable:   Area of the Pizza as it depends on the radius.Independent Variable   :   Radius of the pizza.B)The number of people shopping is a function of the weather.Dependent Variable:  The number of people shopping as it depends on the weatherIndependent Variable   :  WeatherC)  Shoe size is a function of the length of a person's foot. Dependent Variable: Shoe Size, as it depends on the person's foot.Independent Variable:​ Size of the person's foot.