What is the greatest possible error if irina measured the length of her window as 3.35 feet?

The greatest possible error for 3.35 feet is 0.005 feet.

Step-by-step explanation:

Given :  The length of window is 3.35 feet .

To find : Greatest possible error  

Solution :

The greatest possible error in a measurement is defined as half of the measuring unit.

3.35 feet is measured to the nearest hundredth of feet or 0.01 feet

Therefore, The greatest possible error is half of the measuring unit

So, the greatest possible error for 3.35 feet is 0.005 feet.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

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