An idea, event, or object can be represented by a to people better understand it.

An idea, event, or object can be represented by a 'model' to help people better understand it.

Explanation:

If an idea, event or object is to be represented or introduced to an individual or a group of people, a good idea is to represent it with a model.

The reason behind it being that a model will help the people understand it better as they will be able to see something in front of it and know what is being discussed.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2