Answer:
700-100=600
Step-by-step explanation:
600
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step 1. the perfect square will look like this: (7x + a)(7x + a) = (7x + a)^2.
step 2. by performing FOIL you will get 49x^2 + 14xa + a^2.
step 3. 14a = 84. a = 6
step 4. a^2 = 36.
step 5. k = 36.
Data provided in the question
The radius of a wheel = 30 feet
Number of cars attached = 30 cars
Based on the above information
The computation is shown below:
The center angle is
The arc length is
= 1 feet
And, the area of a sector between two cars is
=
We simply do the above calculations so that each item could be find out