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vitfil [10]
3 years ago
12

Kimmy has 47 ft.² of cement blocks each square block has size 1 foot long what is the greatest perimeter of a rectangle that she

can make with the cement blocks
Mathematics
1 answer:
blagie [28]3 years ago
3 0

Answer:

The larges perimeter she can make becomes is 96 ft

Step-by-step explanation:

Here we note that the available brick is 47 ft²

Therefore, she has 47 square cement blocks

Let the length of the sides of the rectangle with the most perimeter be x and y

Then 2·x + 2·y = 47 which is not possible because 47 is a prime number

Hence we have the possible sides of the rectangle is a single line of square blocks such that

x × y  = 47 ft² where y = 1 hence x = 47

The larges perimeter she can make becomes, 2 × (1 + 47) = 96 ft.

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Step-by-step explanation:

We can use a ratio to solve this:

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<em>Another way to solve this is to use the ratios, but simplify the first fraction</em>

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<em>Then multiply the length of the shadow by 3/4</em>

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<em>28÷4 = 7    7 × 3 = 21</em>

<em>21  feet= the height of the palm tree.</em>

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