Question

Medal and fan for best answer
What is the area of a square with a perimeter of 8cm?

Answer 1

What is the formula for the perimeter of a square? What is the formula for the area of a square?

Answer 2

What is the definition of the perimeter?

Answer 3

When you read a problem, and you don't understand what all of the words mean, your first reaction should be to look them up in your textbook or notes.

Answer 4

I have absolutely no doubt that the text or your instructor defined those terms for you and gave you those formulas, and you aren't expected to derive them on your own.

Answer 5

ok thank you @whpalmer4 for your help that you gave me

Answer 6

Have you found the answer yet?

Answer 7

Im trying to

Answer 8

what's the meaning of the perimeter?

Answer 9

the problem is very easy once we know what the terms and formulas are...

Answer 10

perimeter is when you add all the sides I think

Answer 11

Perimeter: the continuous line forming the boundary of a closed geometric figure

If we have a square, we have 4 sides, right? Do we know anything about the lengths of those sides?

Answer 12

Anything interesting about the lengths of the 4 sides of a square?

Answer 13

Doesn't a square have 4 equal sides, by definition?

Answer 14

yes it has

Answer 15

If that's true, what is the length of each side for this square?

Answer 16

that implies that for a square, \[P = 4*s\]where \(P\) is the perimeter, and \(s\) is the length of a side. We have \(P=8\) here, so
\[P=4s\]\[8=4s\]\[s=\]

Answer 17

sorry Im bad at maths :( so it takes longer for me to work out word problems.

Answer 18

What number multiplied by 4 gives you 8?

Answer 19

8 / 4 = ?

Answer 20

32

Answer 21

sorry 2

Answer 22

Very good. Now, do you know the formula for the area of a square, if we know the length of the sides?

It's the same basic formula as that for the area of a rectangle (because all squares are rectangles, though obviously not all rectangles are squares!): area = length * width

for a square, both the length and the width are just the length of any side, so our
formula for the area of a square is:

\[A = s*s = s^2\]

We have \(s = 2 \text{ cm}\)

\[A = (2 \text{ cm})*(2 \text{ cm}) =

Answer 23

ah, nuts, that last line should be:

\[A = (2 \text { cm})*(2 \text{ cm})=\]

Answer 24

The unit will be \(\text{cm}^2\) (read as "square centimeters")

Answer 25

What's the numeric part of the answer?

Answer 26

\[A = (2 \text{ cm})*(2 \text{ cm}) = 2*2 \text{ cm}^2 = \text{_________} \text{ cm}^2\]

Answer 27

What's the numeric part of the answer?

Answer 28

The unit will be \(\text{cm}^2\) (read as "square centimeters")