The height of a cylinder is 35 cm and the area of its curved surface is 3520 cm². Then the radius of the cylinder is ______cm(a) 32
(b) 16
(c) 8
(d) 4
Answers
Answered by
4
Hey there!!
The curved surface area of a cylinder = 2πrh
( 2 ) ( 22 ÷ 7 ) ( r ) ( 35 )
( 2 ) ( 22 ) ( 5 ) ( r )
( 44 ) ( 5 ) ( r )
220 ( r ) = 3520
r = 16 cm
___________
Option ( b )
Answered by
4
hiii!!!
here's ur answer...
given the height of the cylinder is 35cm and curved surface area is 3520cm²
therefore 2πrh = 3520cm²
==> 2 × 22/7 × r × 35 = 3520cm²
==> 44 × r × 5 = 3520cm²
==> 220 × r = 3520cm²
==> r = 3520/220
==> r = 16cm
hence, the correct option is (b) 16 cm
hope this helps..!!
here's ur answer...
given the height of the cylinder is 35cm and curved surface area is 3520cm²
therefore 2πrh = 3520cm²
==> 2 × 22/7 × r × 35 = 3520cm²
==> 44 × r × 5 = 3520cm²
==> 220 × r = 3520cm²
==> r = 3520/220
==> r = 16cm
hence, the correct option is (b) 16 cm
hope this helps..!!
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