Part A you would use 200-L ( since you have 400 feet total 200 feet would equal length plus width)
Part B 200 - 80 = 120
Part C 200-90 = 110
area = 90 x 110 = 9900 square feet
multiply 4 by the cos(45)
4 x cos(45) = 2sqrt(2) approximately 2.828cm
so depending how you are supposed to answer, either 2 sqrt(2) or approximately 2.83 cm
(10 Aus) x <u>(1 NZ / 0.8262 Aus)</u> x <u>(1 Brit / 3.1517 NZ)</u> x <u>(1 US$ / 0.6536 Brit)</u> =
(10) / (0.8262 x 3.1517 x 0.6536) = <em>US$ 5.87</em> (rounded)
Notice that each of the underlined fractions in the top line is equal to " 1 ".
So they change the units of the " 10 AUS " but they don't change its value.,
Based off of what I can see in the photo (its too blurry to know for sure) and what I think you're asking:
The angle of a triangle always adds up to 360degrees, so base it on that and the acute and obtuse angles and get the degrees from there, the angle would be those degrees you find or <10, 5, 4 (what I assume is a 5)
