Question

10 A rectangular paper 11 cm by 8 cm can be exactly
wrapped to cover the curved surface of a cylinder of
height 8 cm. Find the volume of the cylinder​

Answer 1

Area of paper=CSA of cylinder

⇒l×b=2πrh

⇒11×8=2× 22/7×r×8

⇒ r = 11×8×7/44×8

= 7/4cm

∴Volume of cylinder=πr^2h= 22\7 × 7/4 × 7/4×8

=77cm^ 3

I hope help you...