Question : Find if the coordinates given lie on the circles below: (a) Does (4,2) lie on the circle with equation (x - 1)^2 + (y + 2)^2 = 25.
EXPLAIN STEP BY STEP

point lies on circle

Step-by-step explanation:

Substitute the coordinates of the point into the left side of the equation and if equal to the right side then point lies on circle.

(4 - 1)² + (2 + 2)² = 3² + 4² = 9 + 16 = 25 = right side

Then point (4, 2 ) lies on the circle

3x + 4y -25 =0 represents the amount of change sianna should recieve

96 cm is the answer.