Find the surface areas of the prism. explain your answer.

Just find the area of each face and add them together

ex.) #1- 2×8= 16 (that's one face) but since it's a prism there's 2 of them so multiply 16×2 to get 32 and that's 2 faces covered already.

Repeat with 7×2=14×2 = 28

Then, 7×8=56×2=112

So now you have 32, 28, and 112 so now you add those together to get 172. That's your surface area.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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