Interactive practice questions
Consider the circle $x^2+y^2=64$x2+y2=64.
a
State the coordinates of the centre of the circle.
b
What is the radius of the circle?
c
Find the $x$x values of the $x$x-intercepts. Write all solutions on the same line separated by a comma.
d
Find the $y$y values of the $y$y-intercepts. Write all solutions on the same line separated by a comma.
e
Graph the circle.
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Easy
2min
A circle has its centre at the origin and a radius of $4$4 units.
Easy
1min
A circle has its centre at the origin and a radius of $\sqrt{3}$√3 units.
Easy
1min
Write the equation for a circle with centre $\left(0,0\right)$(0,0) and radius $3$3 in the form $\left(x-h\right)^2+\left(y-k\right)^2=r^2$(x−h)2+(y−k)2=r2.
Easy
< 1min
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