Question

Find the height and curved surface area of a cylinder whose diameter is 21cm and total surface area is 1914cm²​

Answer 1

Answer:

h≈18.51cm

d Diameter

21

cm

A Surface area

1914

cm²

Using the formula

A=2πd

2h+2π(d

2)2

Solving forh

h=A

2πd

2﹣d

2=1914

2·π·21

2﹣21

2≈18.51167cm