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Four isosceles right triangles were combined as shown above. What is the ratio of the hypotenuse of the largest triangle to the leg of the smallest triangle?

In a 45-45-90 triangle, ratio of sides are x-x-√2x

Let the length of smallest side = x and since it is right isosceles triangle , longest side becomes √2 x
Now similarly for the second isosceles triangle longest side becomes 2x
for the 3rd longest side becomes 2 √2 x
for the fourth, longest side = 4x

Ratio of longest side to shortest side = 4
IMO B
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imo B

All are isosceles right angle triangle
Smallest isosceles right angle triangle leg length=\(x\)
Hypotenuse =\(\sqrt{2}x\)

For 2nd triangle leg=\(\sqrt{2}x\)
Hypotenuse =\(\sqrt{4}x\)

for 3rd tringle leg=\(\sqrt{4}x\)
Hypotenuse =\(\sqrt{8}x\)

for Biggest triangle leg=\(\sqrt{8}x\)
Hypotenuse =\(\sqrt{16}x\) =4

Ratio of Hypotenuse Of 4th/Leg of first=\(\frac{4x}{x}\)=4
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side of smallest triangle = x
then, hypotenuse = √2 x = side of another triangle

then hypotenuse of next triangle = √(√2 ^2 + √2^2) x= 2x = side of next triangle

then hypotenuse of next triangle = √(2 ^2 + 2^2) x= 2√2 x = side of next triangle
then hypotenuse of next triangle = √[(2√2) ^2 + (2√2)^2] x= 4 x
So, required ratio = 4x/x = 4

So, I think B. :)
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Bunuel

Four isosceles right triangles were combined as shown above. What is the ratio of the hypotenuse of the largest triangle to the leg of the smallest triangle?

A. 2√2
B. 4
C. 3√2
D. 2+2√2
E. 4√2




let, \(a \)be the two edges of the smallest triangle; so, hypotenuse,\( h1 = a\sqrt{2}\)

\(h1\) will be two edges of next triangle; so \(h2 = 4a^2 = 2a\)

similarly, \(h3 = a2\sqrt{2}\) and \(h4 = 4a\)

\(h4\) is the hypotenuse of largest triangle
so, \(h4/a = 4a/a = 4\)

Answer B
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Bunuel

Four isosceles right triangles were combined as shown above. What is the ratio of the hypotenuse of the largest triangle to the leg of the smallest triangle?

A. 2√2
B. 4
C. 3√2
D. 2+2√2
E. 4√2


Solution:

If we let the leg of the smallest triangle be 1, then the leg of the second smallest triangle is √2 (since it’s the hypotenuse of the smallest triangle). Next, the leg of the second largest triangle is √2 x √2 = 2 (since it’s the hypotenuse of the second smallest triangle). Finally, the leg of the largest triangle is 2√2 (since it’s the hypotenuse of the second largest triangle), and the hypotenuse of the largest triangle is 2√2 x √2 = 4. Therefore, the ratio of the hypotenuse of the largest triangle to the leg of the smallest triangle is 4/1 = 4.

Answer: B
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