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qaws [65]
3 years ago
8

a circle has a center at 8,2 the point 3, 7 is on the circle, what is the area of the circle to the nearest tenth

Mathematics
1 answer:
BartSMP [9]3 years ago
6 0
We have to calculate the radius
Radius: Distance between the points (8,2) and (3,7)

Given two points (x₁,y₁) and (x₂,y₂) the distance between these points will be:
Distance=√((x₂-x₁)²+(y₂-y₁)²)

In this case:
Distance=radius=√((3-8)²+(7-2)²)=√(25+25)=√50

Area of a circle=πr²
Data:
r=√50

Therefore:
Area of this circle=π((√50)  u)²=50π u²≈157.1 u².

Answer: the area would be:    50π u²      or        157.08 u²
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Complete Question

Let P (n) be the statement that a postage of n cents can be formed using just 4-cent stamps and 7-cent stamps. The parts of this exercise outline a strong induction proof that P (n) is true for n ≥ 18.

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Answer:

P(18) is true

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