Question

how much metal sheet required to prepare a cylindrical pipe of length 10 cm and radius 7 cm

Answer 1

Hey mate

Here is your Answer

Given radius = 7 cm

Length = 10 cm

Curved Surface Area = 2πrh

=2×22/7×7×10

=44×10

=440cmsquare

therefore,440 m metal sheet is required to prepare a cylindrical pipe

follow me

Answer 2

csa of a cylinder=

$2\pi \times r \times h$h=10cm

r=7cm

---> 2×22/7×7×10

--->2×22×10

---> 440cm^2