Question

The radius and height of a cylinder are in the ratio 1: 7. And the volume is
594 cm3 . Find its radius and height.

Answer 1

Height of the cylinder(h)=7r/2. Volume of the cylinder=22*r*r*7r/(7*2)=11^3=704 => r=cube_root(704/11)=4cm. h=7*4/2=14cm.

Total surface area of the cylinder=2*22*4(4+14)/7=3168/7 cm²

Trust this helps.

Answer 2

Answer:

3168/7cm²

Step-by-step explanation:

Height of the cylinder(h)=7r/2. Volume of the cylinder=22*r*r*7r/(7*2)=11^3=704 => r=cube_root(704/11)=4cm. h=7*4/2=14cm.

Height of the cylinder(h)=7r/2. Volume of the cylinder=22*r*r*7r/(7*2)=11^3=704 => r=cube_root(704/11)=4cm. h=7*4/2=14cm.Total surface area of the cylinder=2*22*4(4+14)/7=3168/7 cm²

Hope Helps:-)