AccipiterQ
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In the figure above, SQRE is a square, AB = AC, and AS = AQ. What is the difference between the perimeter of triangle ABC and the perimeter of square SQRE?
(1) The length of RE is 4 times the length of BR.
(2) The area of triangle ABC is 75% of the area of square SQRE.
(1)4BR=RE
2(BR+CE)=RE (since AC=AB && AS=AQ)
CB=RE/2+RE=3/2RETake triangle ACD
AC^2(3/4RE)^2+RE^2 (CD=1/2CB &&CB=3/2RE)
AC^2=25/16RE^2
AC=5/4RE
PERIMETER OF ABC=5/4RE+5/4RE+3/2RE=4RE
PERIMETER OF SQ.=4RE
Perimeters are equal.
suff.
(2) 1/2 CB*AD=3/4 RE^2 (75%=3/4)
as AD=RE
CB=3/2REsame info as (1)
suff.
Ans D
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