mrs. cheung hired a landscaping service to plant a row of bushes around her triangular backyard. if the bushes must be planted 3 feet apart, approximately how many bushes are needed for mrs. cheung's backyard?

Mrs. Cheung's triangular backyard is a bright tri9angle. Therefore, applying the Pythagorean theorem, we would find the third length as shown below:

Third length = √(30² - 12²)

Third length = √(900 - 144)

Third length = √756

Third length = 27.5 feet.

Find the perimeter of the triangular backyard:

Perimeter = 27.5 + 30 + 12

Perimeter = 69.5 feet

The approximate number of bushes that are needed = 69.5/3 ≈ 23 bushes.

Therefore, applying the Pythagorean theorem, the approximate number of bushes that are needed is: 23 bushes.

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