The surface area of a cube is 27^2. Calculate the length of the sides of the cube

Mathematics

1 answer:

Anon25 [30]2 years ago

5 0

Answer:

Step-by-step explanation:

Do you mean 27 units² ?

A cube has six congruent, square faces. Area of one face = (27/6) units²

Length of one edge = √(27/6)

= √(9/2)

= √9/√2

= 3/√2

= 3√2/2 units

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Solve the equation by completing the square. Round to the nearest hundredth if necessary. x2 + 2x = 17

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Equation Given
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x² + 2x = 17

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Add the constant to make it perfect square
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x² + 2x + (2/2)² - ²(2/2)² = 17

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Evaluate the brackets
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Form the perfect square
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