Exam 1 2009

[aishuwa1995]

Hi,
Can someone please tell me how to do these questions..I've gone mind blank 

[paulsterio]

First question:

For Prism 1 - Volume = Area of Base * Height = 1/2 * height * width * length

For Prism 2 - 2 x height, 3 x length

Hence, Volume = 1/2 * 2 * height * 3 * length * width = 6 * Original Volume

160 * 6 = 960 - (C)

Will do 2nd question in a bit.

[Conic]

2nd question:
Find angle TNM with cos rule: 41.40º
Let A be the point on the bottom of the wall closets to the pole so TNA is a right angled triangle.
Find the distance TA with sine: 3.31m
Let P be the point where the pole hits the wall (above A).
Find AP with pythagoras: 2.25m round to 2.3m
=C
Not sure if I'm correct 

[aishuwa1995]

2nd question:
Find angle TNM with cos rule: 41.40º
Let A be the point on the bottom of the wall closets to the pole so TNA is a right angled triangle.
Find the distance TA with sine: 3.31m
Let P be the point where the pole hits the wall (above A).
Find AP with pythagoras: 2.25m
=B
Not sure if I'm correct 

the answer is C 

[Conic]

Lol, I meant to say C, that's what my working showed 

[aishuwa1995]

Lol, I meant to say C, that's what my working showed 

lol..awks
thanks  Ochlocracy and Paul