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3 years ago

I need the answer plz

Mathematics

1 answer:

lakkis [162]3 years ago

5 0

Answer:

GH = 7 $\sqrt{2}$

Step-by-step explanation:

Using the sine ratio in the right triangle and the exact value

sin45° = $\frac{1}{\sqrt{2} }$

sin45° = $\frac{opposite}{hypotenuse}$ = $\frac{HI}{GH}$ = $\frac{7}{GH}$ = $\frac{1}{\sqrt{2} }$ ( cross- multiply )

GH = 7 $\sqrt{2}$

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Answer:

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Total length of the steel = 31 inches

Let the length of the first piece = x

let the length of the second piece = y

Let the length of the third piece = z

So,

y = 2x

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Thus; y = 2x = 2 × 4 = 8 inches

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