how to draw a circular ring in matlab in matlab

main.m
center = [0, 0]; % center of the circle
radius_outer = 5; % outer radius of the ring
radius_inner = 3; % inner radius of the ring

theta = linspace(0, 2*pi, 100); % angles from 0 to 2*pi

x_outer = center(1) + radius_outer * cos(theta);
y_outer = center(2) + radius_outer * sin(theta);

x_inner = center(1) + radius_inner * cos(theta);
y_inner = center(2) + radius_inner * sin(theta);

plot(x_outer, y_outer, 'b');
hold on;
plot(x_inner, y_inner, 'b');
axis equal;
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