Answer:
Pythagorean Theorem:
a^2 + b^2 = c^2
6^2 + b^2 = 12^2
36 + b^2 = 144
b^2 = 108
b = 10.4
Let me know if this helps!
Given:
Population in circular region = 1.15 million
Population Density = 18075 people per square kilometer
Formula Used:
We need to make use of the below formula to find the area of circular region.
![Area \; of \; Circular \; region \; = \; \frac{Population}{Density}](https://tex.z-dn.net/?f=%20Area%20%5C%3B%20of%20%5C%3B%20Circular%20%5C%3B%20region%20%5C%3B%20%3D%20%5C%3B%20%5Cfrac%7BPopulation%7D%7BDensity%7D%20%20%20)
Applying the concept:
Substituting the given information in the formula above we get...
![Area \; of \; circular \; region \; = \; \frac{1.15 \times 10^6}{18075} \\\\Area= \frac{1150000}{18075} \approx 63.6 \; km^2](https://tex.z-dn.net/?f=%20Area%20%5C%3B%20of%20%5C%3B%20circular%20%5C%3B%20region%20%5C%3B%20%3D%20%5C%3B%20%5Cfrac%7B1.15%20%5Ctimes%2010%5E6%7D%7B18075%7D%20%20%5C%5C%5C%5CArea%3D%20%5Cfrac%7B1150000%7D%7B18075%7D%20%20%5Capprox%2063.6%20%5C%3B%20km%5E2%20)
![To \; find \; radius \; of \; circle \; with \; area \; 63.6 \; square \; kilometer:\\\\Area \; of \; circle \; = \;\pi r^2\\\\\pi r^2=63.6\\\\r^2= \frac{63.6}{\pi} \\\\r^2=20.25\\\\r= \sqrt{20.25} \\\\ r \approx \; 4.5 \; km](https://tex.z-dn.net/?f=%20To%20%5C%3B%20find%20%5C%3B%20radius%20%5C%3B%20of%20%5C%3B%20circle%20%5C%3B%20with%20%5C%3B%20area%20%5C%3B%2063.6%20%5C%3B%20square%20%5C%3B%20kilometer%3A%5C%5C%5C%5CArea%20%5C%3B%20of%20%5C%3B%20circle%20%5C%3B%20%3D%20%5C%3B%5Cpi%20r%5E2%5C%5C%5C%5C%5Cpi%20r%5E2%3D63.6%5C%5C%5C%5Cr%5E2%3D%20%5Cfrac%7B63.6%7D%7B%5Cpi%7D%20%20%20%5C%5C%5C%5Cr%5E2%3D20.25%5C%5C%5C%5Cr%3D%20%5Csqrt%7B20.25%7D%20%20%5C%5C%5C%5C%20r%20%5Capprox%20%5C%3B%204.5%20%5C%3B%20km%20)
Conclusion:
The radius of the circular region rounded to the nearest tenth is 4.5 km.
Answer:
Step-by-step explanation:
Let the Price of TV set be x.
The price of computer = x - 5200
x + x - 5200 = 105200
2x = 105200 + 5200
2x = 110400
x = 110400/2
x = Rs. 55200
Price of TV set = Rs. 55200
Price of computer set = 55200 - 5200 = Rs. 50000
It’s -23 because the minus and negative will make a positive so -23+8=-15