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1 year ago

This sphere has a radius of 9 m. What is the surface area of the sphere? Enter your answer, in exact form, in the box

1 answer:

6 0

$\textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=9 \end{cases}\implies SA=4\pi (9)^2\implies SA=324\pi$

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Answer:

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Step-by-step explanation:

We are asked to multiply the given polynomials.

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Multiply each term of the first polynomial to each term of the second polynomial.

$x^ 2 \times (x^2 + x + 2) = x^4 + x^3 + 2x^2$

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$1 \times (x^2 + x + 2) = x^2 + x + 2$

Add the results

$(x^4 + x^3 + 2x^2) + (3x^3 + 3x^2 + 6x) + ( x^2 + x + 2)$

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$x^4 + 4x^3 + 6x^2 + 7x + 2$

The answer is written in descending powers of x.

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2 years ago

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Answer:

$86.55

Step-by-step explanation:

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2 years ago

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The correct anwser would be 56

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The length of the hypotenuse of a 30-60 -90 triangle is 14 units. what is the length of the short leg

kifflom [539]

Recall that the short leg is the side opposite the 30 degrees angle. And the ratio of the short leg to the hypotenuse is 1:2.

Let the length of the short leg be x, then,

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago