Patterns can be used to send messages, sounds of voices, and images. these patterns transfer information, allowing people to over long distances.

These patterns transfer information, allowing people to communicate with each other over long distances.

This works IF ...

-- the patterns are understood and agreed by the people at both ends, and

-- the pattern that is sent doesn't get changed or covered up along the way, and

-- the person at the receiving end has some way to detect the pattern when it reaches her.

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