Question
You need two bottles of fertilizer to treat the flower garden shown. How many bottles do you need to treat a similar garden with a perimeter of 105 feet?
- 10
- 13
- 14
- 15
Hint:
Perimeter = length of sides
Area = 1/2 x h x (b1 + b2)
Finding the number of fertilizer bottles required
The correct answer is: 13
Perimeter of the flower garden shown= 42 ft.
Area of flower garden shown = 
= 66 square feet
Ratio of area = ratio of square of perimeters = ratio of square of lengths of corresponding sides
Area of the similar garden , x = 412.5 square ft.
66 square ft garden requires = 2 bottles of fertilizer
1 Bottle of fertilizer = 
= 33 square feet
412.5 square ft garden requires = 
= 12.5 …13 bottles of fertilizer.
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