Question

please solve 12th question answered first i will mark as brainlest

Answer 1

12.

Given that Area of wall is 108m^2

=> l * h = 108

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Given that Area of north wall is 135 m^2.

= > b * h = 135

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Given that Area of floor is 180 m^2

= > l * b = 180

= > b = (180/l)

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Substitute (3) in (2), we get

= > (180/l) * h = 135

= > (180h/l) = 135

= > 180h = 135l

=> l = (180h/135)    ------- (1)

Substitute (4) in (1), we get

= > l * h = 108

= > (180h/135) * h = 108

= > (180h^2) = 108 * 135

= > h^2 = 81

= > h = 9m.

Therefore, the height of the auditorium is 9m.

Hope this helps!