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Answer:
#include <iostream>
using namespace std;
int main()
{
float radius = 5.4;
float circumference = 2 * 3.14 * radius;
float area = 3.14 * radius * radius;
cout<<"the circumference of the circle is "<<circumference<<endl;
cout<<"the area of the circle is "<<area<<endl;
return 0;
}
Explanation:
Include the library iostream for using the input/output instructions.
create the main function and define the variable with value. Then,
use the formula to calculate the circumference and are of circle.
here, choose 
after that, display the result.
Note: All variable define in float type.
Answer:
RAD is the technique that are used in software development methodology to facilitate the application of the various software development. It is basically provide the high availability of software for he designers. It works on the principle of waterfall model.
Advantages-
- It is useful to reduce the overall risks in the system
- It is flexible to change
- The high level abstraction are easy to transfer
Disadvantage-
- This process cannot be use in small level projects
- Not all the applications are suitable with the RAD
- It does not work on high technical complexity
<span>The network topology describes the physical arrangement, installation, and connection of cables, computer, and other devices.
The network topology can be bus topology (a</span><span> network topology that uses a single cable or conductor to connect all nodes on the network.) ,</span>star topology (a network topology in which cables running from each node connect to a single point, such as a hub.), ring (a network topology that consists of a single cable that runs continuously from node to node), mesh, hybrid, hub topology,... according the arrangement of the nodes.
<em>Answer:</em>
<em>Answer:c</em><em> </em><em> to connect a user to a new slide, a file, or a webpage</em>
<em>Explanation:</em>
<em>Explanation:c</em>
