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Mathematics 12 Online
OpenStudy (anonymous):

What is the surface area of a cube with faces that each have an area of 14 cm2? A. 56 cm2 B. 84 cm2 C. 112 cm2 D. 196 cm2 @Nikkiwalker22

OpenStudy (redheadangel):

how do you find surface area?

OpenStudy (anonymous):

base area + face side area?

OpenStudy (anonymous):

right?

OpenStudy (redheadangel):

Identify the parts of three-dimensional solids. ... Represent three-dimensional figures with nets. ... Analyze rectangular prisms to find surface area - Part 1. ... Analyze rectangular prisms to find surface area - Part 2. ... Find surface area of rectangular prisms. ... Analyze triangular prisms to find surface area - Part 1. good

OpenStudy (redheadangel):

in short: A=6a2

OpenStudy (redheadangel):

so, what do you do now?

OpenStudy (anonymous):

6 x area x 2?

OpenStudy (anonymous):

6*14cm^2?

OpenStudy (anonymous):

oops

OpenStudy (anonymous):

ok

OpenStudy (redheadangel):

the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared.

OpenStudy (anonymous):

idk for sure

OpenStudy (redheadangel):

so it's squared not multiplied by 2

OpenStudy (anonymous):

so 6 x area x area

OpenStudy (bohotness):

qhich oen you think it is i known this one

OpenStudy (bohotness):

which one do you thin k its is

OpenStudy (redheadangel):

what is 14 times 6?

OpenStudy (anonymous):

84

OpenStudy (bohotness):

-.- its b

OpenStudy (redheadangel):

good, so your answer would be 85cm^2

OpenStudy (redheadangel):

:) hoped that helped!

OpenStudy (anonymous):

84

OpenStudy (redheadangel):

ya, sorry that's what i meatn

OpenStudy (bohotness):

:p

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