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                                                                                   Guess is more important than calculation --- Knowhowacademy.com

Problem Num : 1 Type: Mathematical Writing Section:Area  Theme:None Adjustment# : 1 Difficulty: 500 level
Category	Polygon
Analysis	12*18=9*x Do not calculate.. First reduce a fat
Solution/Answer	from the given info, 12*18=9*x. Reduce a fat by dividing both by 9. 12*2=x Answer: E

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Problem Num : 2 Type: Mathematical Writing Section:Area  Theme:None Adjustment# : 1 Difficulty: 500 level
Category	Polygon
Analysis	The area with one side a is a^2
Solution/Answer	We know what is the length of the square, which is p/4 Therefore, Area is p^2/16 Answer: E

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Problem Num : 3 Type: Calculation Section:Area  Theme:None Adjustment# : 5 Difficulty: 600 level
Category	Polygon
Analysis	Can you use 3 instead of 2.5?
Solution/Answer	36=2.5*L what do u think? will u calculate the 36/2.5? or use 36/3 instead. If you know 36/2.5 > 36/3, then u can choose the answer so quickly. Keep in mind!! this is the multiple choice question~ Answer: E

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Problem Num : 4 Type: Understanding Section:Area  Theme:None Adjustment# : 5 Difficulty: 600 level
Category	Polygon
Analysis	We need unique value for x
Solution/Answer	(1) We don't know which one is 120m (2)3x can't be a 2x. So x+60=2x x will be 60. Answer: B

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Problem Num : 5 Type: Mathematical Writing Section:Area  Theme:None Adjustment# : 7 Difficulty: 600 level
Category	Polygon
Analysis	Can you express the area using Length and Width?
Solution/Answer	Length can be expressed by L=(x-3*2)/2 ----(*) so that we can make an equation as follows. Length* Width = Area (x-3*2)/2 * 3 = x 3x -18= 2x so that x =18 from (*) L=6. Answer: E

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Problem Num : 6 Type: Mathematical Writing Section:Area  Theme:None Adjustment# : 30 Difficulty: 600 level
Category	Polygon
Analysis	We need two variables to make an equation.
Solution/Answer	lets say the length and width L and W respectively. then 3*3+2*y =36 so y=13.5 3*3+2*x =24 , x=7.5 Answer: E

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Problem Num : 7 Type: Mathematical Writing Section:Area  Theme:None Adjustment# : 31 Difficulty: 700 level
Category	Polygon
Analysis	Need to calculate the area of front surface and the trim.
Solution/Answer	Combine two inside rectangles. Then the area of two rectangles is 4*5. So the area of trim will be 48-4*5=28 R=the area of trim / the area of front surface = 28/48 = 7/12 Answer: D

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Problem Num : 8 Type: Mathematical Writing Section:Area  Theme:None Adjustment# : 35 Difficulty: 800 level
Category	Polygon
Analysis	Using the word "the same area", we need to make an equation.
Solution/Answer	let's say the width and length 5k and 6k respectively. then area of picture will be 30k^2 And the area of frame will be 30k^2 from given condition. so that we can make a equation from given condition. 2*5k*6k= 18*15 so.. k ^2= 9/2 k=3/ sqrt(2) so that length of picture is 6k= 18/sqrt(2) = 9sqrt (2) Answer: A

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