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Question

Question: The area of the curve \(x ^ { 2 } + y ^ { 2 } = 2 a x\) is....

The area of the curve x2+y2=2axx ^ { 2 } + y ^ { 2 } = 2 a x is.

A

πa2\pi a ^ { 2 }

B

2πa22 \pi a ^ { 2 }

C

4πa24 \pi a ^ { 2 }

D

12πa2\frac { 1 } { 2 } \pi a ^ { 2 }

Answer

πa2\pi a ^ { 2 }

Explanation

Solution

x2+y22ax=0x ^ { 2 } + y ^ { 2 } - 2 a x = 0

Obvioiusly, radius of the circle is a. Hence the area of triangle is πa2\pi a ^ { 2 }.