Bunuel wrote:
In the figure above, if the area of square region B is 4, what is the area of triangular region D?
(1) The area of square region C is 9.
(2) The area of square region A is 13.
Given: In the figure above, the area of square region B is 4.
Asked: What is the area of triangular region D?
Area of triangular region D = \(\frac{1}{2}\) * side of square region B * side of square region C
= \(\frac{1}{2}\) * 2 * side of square region C = side of square region C
(1) The area of square region C is 9.
Side of square region C = 3
SUFFICIENT
(2) The area of square region A is 13.
13 = 2^2 + x^2
x = 3 = Side of square region C
SUFFICIENT
IMO D
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