Question

the curved surface area of a cylinder is 1320 cm ^2 and its base diameter is 21 cm find the volume of the cylinder

Answer 1

CSA OF CYLINDER = 2πRH

1320 = 2×22/7×21×H

H = 1320×7/44×21

H = 9240/924 = 10cm

VOLUME OF CYLINDER = πR²H

= 22/7×21×21×10

= 13860cm³


HOPE IT WILL HELP YOU. MARK IT AS BRAINLEIST IF YOU LIKED THIS SOLUTION

Answer 2

CSA of cylinder = 2*22/7*r*h
               1320   = 2*22/7*21/2*h
                     h   = 1320*7*2/2*22*21
                     h   = 18480/924
                     h   = 20 cm
Vol. of cylinder   = 22/7*r^2*h
                           =  22/7*21/2*21/2*20
                           = 6930 cm^3