Write a program to ask the user about the validity of

a simple statement. The program should accept the

response then display the statement as well as the

response. The response should be true or false. For

this question, you must use a variable of type bool.

Use the

Convert. ToBoolean $()$

method to obtain a bool from an

input.

It is useful to know that Convert.ToBoolean$()$ can work with true, True, tRue, TRUE etc.

Write a program to calculate the area of a circle. The

user will enter the radius of the circle and the

program will calculate and display the area

according to the formula $($area $=3\mathrm{.}14*$ radius $*$

radius$).$ You must accept fractions as the input. If

Use the

Convert. ToDouble$()$

method to obtain a double from

an input.

the user enters $1\mathrm{.}2$ for the radius then the area will be $4\mathrm{.}52.($Use the $"F"$ format$-$specifier for

floating point values$).$

Write a program that prompts the user for a number

$($that may be a fraction$).$ The program reads in the

input and print the following: the input as a double,

Use the appropriate method of

the Convert class

the input as an int and finally the input as a char.

e$.$g$.$ if the input is $65\mathrm{.}790,$ then the output will be $65\mathrm{.}790,65,$ and $A.$

Adult ticket cost $$3\mathrm{.}75$ and child ticket cost $$2\mathrm{.}25.$ Write a program to prompt the user for the

amount of adult and child ticket that she needs. The program will display a user$-$friendly

message of the number of tickets brought as well as the total cost. $($Use the $"$C$"$ format$-$

string for currency$).$

Write a program to calculate and display the potential difference between the ends of a wire.

The program will prompt the user for the current flowing and the resistance of the wire.

Potential difference is the product of the current and the resistance of the wire and may

include a fractional part. $($Again$,$ use the $"F"$ format$-$specifier for floating point values$).$