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chubhunter [2.5K]

1 year ago

10

A closed rectangular tank has a length of 8.5 feet, a width of 3.2 feet, and a height of 4.8 feet. Find the surface area of the

tank.
Thank you

1 answer:

Stella [2.4K]1 year ago

4 0

Answer:

166.72

Step-by-step explanation:

A= 2(wl+hl+hw)

A= 2(3.2×8.5+4.8×8.5+4.8×3.2)

A= 2(27.2+40.8+15.36)

A= 2(83.36)

A= 2×83.36

A= 166.72

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Step-by-step explanation:

Given

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Required

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Given that the angle is in the 4th quadrant;

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Since a belongs to the x axis and b belongs to the y axis;

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Rationalize the denominator

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$cos\theta = \frac{a\sqrt{a^2 + b^2}}{a^2 + b^2}$

So, from the list of given options;

<em>The student's mistake is that a is positive in quadrant iv and his error is in step 3</em>

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