URGENT PLEASE WILL FAN AND MEDAL What is the perimeter of the polygon in the diagram?

Question

anonymous · Answer

2$$2\sqrt{(a-b)^2}$$

$$4(a+b)^2$$

$$2(a^2+b^2)$$

$$4\sqrt{a^2+b2}$$

campbell_st · Answer

I think you need to include a diagram

anonymous · Answer

attachment

anonymous · Answer

sorry

campbell_st · Answer

so the shape is a rhombus

find the length of the side by using pythagoras' theorem 

the shorter sides have lengths a and b

then since all 4 sides are the same, multiply the answer from pythagoras' theorem by 4

anonymous · Answer

but the choices i included just dont make sense.

anonymous · Answer

which one is the correct pythagores therom

campbell_st · Answer

so pythagoras' theorem is 

$$c^2 = a^2 + b^2~~~so ~~~ c = \sqrt{a^2 + b^2}$$

to find the perimeter, multiply by 4

wil476003 · Answer

I I believe the the answer is the last one

anonymous · Answer

how do u know?

wil476003 · Answer

Because the one above explained how I was going to explain it good job campbell_st

campbell_st · Answer

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