when the diameter of a circle is trebled , the area is multiplied by how many times?

when the diameter of a circle is trebled , the area is multiplied by how many times? ?

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ব্যাসার্ধ r হলে ব্যাস 2r এবং ক্ষেত্রফল π\(r^{2}\) ব্যাস 2r এর তিনগুণ = (2r × 3) = 6r যখন ব্যাসার্ধ 3r ⸫ ক্ষেত্রফল = a(3r)2 = 9 πra2 অর্থাৎ, ক্ষেত্রফল প্রথমটির 9 গুণ।

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When is the following division imposible? x/y-2z

It takes 72 hours for five workers to paint an office building. If the number of hours worked is inversely proportional to the number of workers, how many hours should it take six workers to paint the building?

when the diameter of a circle is trebled , the area is multiplied by how many times? ?

When is the following division imposible? x/y-2z

It takes 72 hours for five workers to paint an office building. If the number of hours worked is inversely proportional to the number of workers, how many hours should it take six workers to paint the building?

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