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Pablo folds a straw into a triangle with side lengths of 4x2 – 3 inches, 4x2 – 2 inches, and 4x2 – 1 inches. The perimeter of the triangle is 12x2 – 6 inches. If x = 1.5, what was the length of the straw before it was folded?

inches

2 Answers

1 vote

Answer:

21 inches

Explanation:

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User Omitobi
by
8.2k points
5 votes

Answer:

The length of straw is 21 inches.

Explanation:

Given :

Lengths of straw =
4x^2-3 ,
4x^2-2,
4x^2-1 inches.

Perimeter of the triangle is
12x^2-6 inches.

Perimeter of triangle is sum of three sides .

Thus, when we open the triangle we obtain the length of straw thus perimeter is the length of the straw.

Given x = 1.5 inches

Put in perimeter, we get,

Length of straw = Perimeter of triangle=
12x^2-6 at x = 1.5 inches


\Rightarrow 12(1.5)^2-6=12*2.25-6=27-6=21

Thus, the length of straw is 21 inches.




User Martin Buberl
by
8.3k points
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