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Mathematics 21 Online
OpenStudy (openstudyrocks5*):

Help

OpenStudy (openstudyrocks5*):

OpenStudy (anonymous):

When you wanna find the surface area, you find the area of all the sides and then add them. How many sides does a cube have?

OpenStudy (openstudyrocks5*):

6?

OpenStudy (anonymous):

http://prntscr.com/6zka64 Yep. so its made up of 6 squares. Find the area of 1 square and then multiply that by 6 because there's 6 sides

OpenStudy (openstudyrocks5*):

How do you find the area?

OpenStudy (anonymous):

length x width

OpenStudy (anonymous):

Since we're finding for a square, the length is the same as the width.

OpenStudy (openstudyrocks5*):

20.25?

OpenStudy (anonymous):

yes. Now we have to multiply that by 6 since there are 6 sides. Or you can add 20.25 6 times.

OpenStudy (openstudyrocks5*):

121.5

OpenStudy (anonymous):

yes. that's the answer.

OpenStudy (openstudyrocks5*):

Thanks @claudee_

OpenStudy (anonymous):

yw

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