The volume of a metallic cylindrical pip...

The volume of a metallic cylindrical pipe is `7480 cm^3`. If its length is 1.4 m and its external radius is 9 cm, then its thickness (given `pi= 22/7`) is:
एक धातु के बेलनाकार पाइप का आयतन 7480 घन सेंटीमीटर है। यदि इसकी लंबाई 1.4 मीटर है और इसकी बाहरी त्रिज्या 9 सेंटीमीटर है, तो इसकी मोटाई ज्ञात कीजिये?

1 cm

0.8 cm

0.9 cm

1.2 cm

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