A circle has its centre at the origin and has the rquation x^2+y^2=81 what is the size of the radius

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Michael Watson · Answer 1 · 2024-07-02T02:16:08+0000

Answer:

radius = 9

Explanation:

the equation of a radius centred at the origin is

x² + y² = r² ( where r is the radius )

x² + y² = 81 ← is in standard form

with r² = 81 ( take square root of both sides )

r =
√(81) = 9

A circle has its centre at the origin and has the rquation x^2+y^2=81 what is the size of the radius

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A circle has its centre at the origin and has the rquation x^2+y^2=81 what is the size of the radius​

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A circle has its centre at the origin and has the rquation x^2+y^2=81 what is the size of the radius