Question

The diameter of the base of a right circular cylinder is r and its height is equal to
the radius of its base. Volume of the cylinder is:
एक लम्ब वृत्तीय बेलन के आधार का व्यास । है और इसकी उँचाई आधार की त्रिज्या के
बराबर है । उस बेलन का आयतन है :
(B)
I
(C) 30
(D) 5​

Answer 1

Answer: 22/7×r³/8

Please see the picture below to see the solution.

But the question is wrong because no further information about the diameter is given and the options contain integer values.