Question

does the point - 2.5, 3.5 lie inside outside or on the circle X square + Y square =25

Answer 1

ATQ,

x^2 + y ^2 = 25

x = 2.5, y = 3. 5

So, Putting value of x and y,

( 2.5) ^2 + ( 3.5 ) ^2 = 25

6.25 + 12.25 = 25

18.25 = 25

Since, 18.25 < 25

So, the point will lie inside of the circle.