Answer:
180
Explanation:
Height times width/2 equals the area of a triangle. 8 times 15 divided by 2 equals 60. 3 plants per square yard. 3 times 60 equals 180.
180 plants
the area of a right triangle is: ab/2
side a = 8
side b = 15
8 x 15 = 120
120/2 = 60
Michael wants 3 plants for every square yard (multiply by 3)
60 x 3 = 180
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