Question

A rectangular tin board of dimensions 28cm x 7cm is rotated about its length.
Find the volume of the solid generated.​

Answer 1

Answer:

Height of cylinder=7

perimeter of cylinder=25

thus curved surface area =2πrh=25×7=175cm

2

Answer 2

Explanation:

[tex[/tex$tinyliticolor{white}{if \: A,Band : c \: are l: interior V angles of \'a\ ABC, then show that}$ [tex/tex] [tex] \color(white) Height of cylinder=7

perimeter of cylinder=25

thus curved surface area =2πrh=25×7=175cm

2 / tex]