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22 Sep 2006, 05:35
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What is the ratio of the area of quadilateral Q to that of square R?
(A) 19/32 (B) 39/64 (C) 7/12 (D) 5/8 (E) none of these
(A) 19/32 (B) 39/64 (C) 7/12 (D) 5/8 (E) none of these
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22 Sep 2006, 05:49
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Area square = 2*2 = 4
Area of quadrilateral = 0.5(2+8)*3 – 4*3 -x = 15 -12 -x= 3 -x
x is the portion unshaded fro the triangle including the quadrilateral
thats the best i can get so far
wrong or right direction
Area of quadrilateral = 0.5(2+8)*3 – 4*3 -x = 15 -12 -x= 3 -x
x is the portion unshaded fro the triangle including the quadrilateral
thats the best i can get so far
wrong or right direction
(B)
To calculate the area of (Q), we can use the aeras of several triangles
Q = 4*8/2 -3*8/2 -2*1/2 - 1,5*3/2 + 9/8*3/2
<=> Q = 3/4 + 27/16
<=> Q = 39/16
R = 2*2 = 4
R/Q = (39/16)/4 = 39/64
To calculate the area of (Q), we can use the aeras of several triangles
Q = 4*8/2 -3*8/2 -2*1/2 - 1,5*3/2 + 9/8*3/2
<=> Q = 3/4 + 27/16
<=> Q = 39/16
R = 2*2 = 4
R/Q = (39/16)/4 = 39/64
