In a triangle, the measure of the second angle is twice the measure of the first angle. the third angle is equal to the sum of the other angles. which one the following could represent the measures of the three angles?

As stated:

x , the first

2x, the second

3x, the third (sum of first two)

x + 2x + 3x = 180°

6x = 180°

x = 30°

Measures of the Angles would be 30°, 60°, 90°

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this is answer of 144 cubic meters

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!