Question

the curved surface area of a cylinder is 179 20 cm square the circumference of the base is 126 m find the height of the cylinder give your answer correct to two places of decimals​

Answer 1

Answer:

CSA of cylinder =2 pi radius x height = 17920

circumference of base = 2 pi r

so 2 pi r = 126

2 x 22/7 x radius = 126

radius = 126 x 7 /44

CSA = 17920 = 2 x 22/7 x 126 x 7/44 x height

17920 = 126 x height

thus height = 142.22cm

hope this will help you