Question

For the circle x^2 + y^2 = 100, a) State the radius at 6,8

Answer 1

r = 10

Explanation:

The equation of a circle centred at the origin is

x² + y² = r² ( r is the radius )

x² + y² = 100 ← is a circle centred at the origin with

r² = 100 ( take the square root of both sides )

r =
`√(100)` = 10

Answer 2

add multiply divide or subtract make sure to use Pemdas then and you should have your answer

Explanation: