Question

The curved surface area of cylinder is 66cm and it's height is 7cm .Then the radius of the cylinder​

Answer 1

Answer:

20 cm

Step-by-step explanation:

C.S.A of cylinder =1320 cm244

d=21 cm

r=10.5 cm

h=?

C.S.A =1320

=2πrh=1320

=2×722×10.5×h=1320

⇒h=601320=20=h

h=20 cm

Answer 2

HEY BUDDY!!!

HERE'S YOUR ANSWER!!!

CSA of cylinder = 66cm^2

height = h= 7cm

radius= r = ?

CSA = 66

$2\pi \: rh = 66$

$2 \times \frac{22}{7} \times r \times 7 = 66$

44× r = 66

$r = \frac{66}{44}$

$r = \frac{3}{2} cm$

or

r = 1.5 cm

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