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Mathematics 15 Online
kochupaal10:

Find a simplified expression for the perimeter of this shape.

kochupaal10:

mhanifa:

Perimeter is the sum of side measures This is a rectangle with opposite sides equal Set an expression to add the four sides up

mhanifa:

P = 2(l + w)

mhanifa:

l = \[4\sqrt{2}+1 \] w = \[\sqrt{3}-\sqrt{2}\]

mhanifa:

Can you continue from here?

kochupaal10:

i got that, but the answer i got is not correct.

mhanifa:

What is your answer?

kochupaal10:

8\[8\sqrt{2}+2+2\sqrt{3}-2\sqrt{2}\]

mhanifa:

Ok, you need to simplify this

kochupaal10:

I can't remember how

mhanifa:

The first and last terms are like terms and the only simplification is about them

mhanifa:

Its like 8k - 2k

mhanifa:

Can you do this?

kochupaal10:

so i do, 8 + 2 +2

mhanifa:

8k - 2k = 6k

mhanifa:

k is \[\sqrt{2}\]

kochupaal10:

oh so the answer i got is \[6\sqrt{2}+2\sqrt{3}+2\]

mhanifa:

Correct

kochupaal10:

omg thank you!!!! your a lifesaver

mhanifa:

You are welcome!

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