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In the figure above, what is the value of x? (A) 2.5 (B) (C)
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26 Sep 2018, 15:49
26 Sep 2018, 15:49
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In the figure above, what is the value of x?
(A) \(2.5\)
(B) \(\frac{5}{\sqrt{2}}\)
(C) \(5\)
(D) \(5\sqrt{2}\)
(E) \(\frac{10}{\sqrt{2}}\)
Re: In the figure above, what is the value of x? (A) 2.5 (B) (C)
[#permalink]
27 Sep 2018, 01:45
27 Sep 2018, 01:45
1
The answer is 5 cm.
Using the 45-45-90 degree triangle rule, we know that the hypotenuse will be Y root 2, the base and perpendicular will be Y each.
so in the triangle where the hypotenuse is given to be 10 cm, the other 2 sides become (10/root2)
and the value of one of the sides (10/root 2) is hypotenuse to another triangle, using which we can find out the value of x which will be (10/ root2 *root2) = 5
Using the 45-45-90 degree triangle rule, we know that the hypotenuse will be Y root 2, the base and perpendicular will be Y each.
so in the triangle where the hypotenuse is given to be 10 cm, the other 2 sides become (10/root2)
and the value of one of the sides (10/root 2) is hypotenuse to another triangle, using which we can find out the value of x which will be (10/ root2 *root2) = 5
gmatclubot
Re: In the figure above, what is the value of x? (A) 2.5 (B) (C) [#permalink]
27 Sep 2018, 01:45
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