The height of a cylinder is four times the radius of the cylinder. If the volume of the cylinder is 256π cm2 , what is the radius of the cylinder?

A 4 cm

B 8 cm

C 16 cm

D 24 cm

Solution

Correct Answer: Option A

দেওয়া আছে, h = 4r
প্রশ্নমতে , πr ²h=256π
বা, r²h=256
বা,r².4r=256
বা,4r³=256
বা, r³=64
বা,  r³=4³
      r=4
সিলিন্ডারের ব্যাসার্ধ =4cm

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