The volume of a solid cylinder with height 6 cm is 1231 cm³. The radius of the cylinder is -
Answer & explanation
Correct answer: option 1
Volume of cylinder = \(\pi \)r2h
⇒ 1232 = \(\frac{22}{7}\) × r2 × 8
⇒ r2 = \(\frac{1232 × 7}{22 × 8}\)
⇒ r = 7 cm