so rounded it would be C.

Question

apolloschariot · Answer

Would you mind showing me your work? I will check it.

ganeshie8 · Answer

doesn't look correct, did u use the similarity ratio ?

ganeshie8 · Answer

Keep in mind - if the sides are in ratio a/b, then areas will be in ratio a^2/b^2

anonymous · Answer

$$\huge Area factor =(Scale factor)^{2}$$

directrix · Answer

>> it would be C.
Not correct.

anonymous · Answer

2(3.14) 4^2 + 2(3.14) (4*11)

ganeshie8 · Answer

Woah! how did u get h=11 ?

anonymous · Answer

$$\large \frac{ Area of the bigger bin }{ Area of the smaller bin  }=[\frac{ the radius of the bigger bin }{ the radius of the smaller bin }]^{2}$$

ganeshie8 · Answer

let me cut this short :
scale factor =  4/5  
area factor =  (4/5)^2

Since the larger bin has a surface area of 471.3, the smaller bin will have a surface area of  :

 (4/5)^2 * 471.3

simplify

directrix · Answer

Apply the theorem from the attachment.

anonymous · Answer

188520

anonymous · Answer

This is true for any two similar solids

ganeshie8 · Answer

http://www.wolframalpha.com/input/?i=%284%2F5%29%5E2*471.3

ganeshie8 · Answer

I think you multiplied everything instead of dividing.. check once ^^

directrix · Answer

(4/5)^2 = x/471.3 where x is the surface area of the smaller solid.

anonymous · Answer

oops!

ganeshie8 · Answer

its 4/5  not 4*5 :P

anonymous · Answer

301.632

directrix · Answer

Yes. http://www.wolframalpha.com/input/?i=25x+%3D+16+*+471.3

anonymous · Answer

Total SA= B. 301.6

directrix · Answer

in square feet--> yes, that is what I got.

anonymous · Answer

Great; THANK YOU ALL! :D

directrix · Answer

You are welcome