area of a circle function file / prompt and fprintf() output

2020 3 11
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更新时间：2020 5 14
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I have created a function file for the area of a circle, but I also need to include a prompt asking for the units of the radius. I also need to have the output area be expressed in the proper units, but am unsure of how to do either. This is what I have --
function [area] = area_circle(radius)
area = pi.*radius.^2;
end

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Bhaskar R
Bhaskar R 2020-3-11

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function area_circle()
radius = input('Enter the radius: ');
area_cir = pi.*radius.^2;
disp(['Area of circle: ', num2str(area_cir)])
end

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