Question

the volume of a right circular cylinder is 1100 cm³ and the radius of its base is 5cm.find its curved surface area (π=22/7)

Answer 1

the curved surface area of cylinder is 440cm^2
$cm {}^{2}$

Answer 2

Volume of cylinder=1100 cm^3
Radius of cylinder=5 cm
Volume of cylinder=1100 cm^3
22/7×r^2h=1100
22/7×5×5×h=1100
h=1100×7/5×5×22=14 cm
Curved surface area of circle=2×22/7×rh
=2×22/7×5×14
=2×22×2×5=440 cm^2