Please help me with this for 20 points
1 answer:
Answer: The answers are in the photo.
Step-by-step explanation:
To solve question 4, you have to work backwards. Plug 40.82 as C in the formula C = D x 3.14. It would now look like: 40.82 = D x 3.14. Divide 40.82 by 3.14 and you would receive 13 as the diameter. However, we are searching for the radius. The radius is half of the diameter. 13 / 2 is 6.5
To solve question 5, you'll need to use the formula C = D x 3.14. So far, we know D is 6. 6 x 3.14 is 18.84. Yet, we need to find the cost. Each foot costs $12.50, so that's what we multiply to 18.84. In the end, the cost is $235.50.
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Answer:
<h2>22 meters.</h2>Step-by-step explanation:
It's important to notice that the area is circular, which is defined by
Replacing given values and solving for r, we have
But, the diameter is twice the radius, so
Therefore, the diameter is 22 meters.
Answer:
x=199 and y=158
Step-by-step
Let x and y be two numbers
Given that the sum of the two numbers is 357, it may be written as
difference of the two numbers is 41, it may be written as
Now adding (1) and (2), we get
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(Where y is in alternative signs so it may be cancelled)
Therefore
now substituting x=199 in (1) we get
Therefore