Answer:

Step-by-step explanation:
we can easily calculate the perimeter of three points, using vectors. See the picture...
<h2><u>Given</u> :</h2>
The given equations are :


Let's solve for g in equation (2) :


now, let's plug value of g from equation (3) into equation (1) :





plugging value of b in equation (3) :



since " g " represents ground seats, number of ground seats :
=》396
And " b " represents balcony seat, therefore it is equal to :
=》312

The answer is B because area it's length times width and 5 times 3 is 15
Answer:
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1) " 30, 60, 50 " .
2) " 30, 50, 6 " .
3) " 60, 50, 3 " .
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<u>Note</u>:
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1) 30 * 60 * 5 = 9,000 .
2) 30 * 50 * 6 = 9,000 .
3) 60 * 50 * 3 = 9,000 .
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