Question

3. The curved surface area of a cylinder is 1,320 cm? and its base has a radius of 10.5 cm. Find th
a a
height of the cylinder
​

Answer 1

Answer:

Curved surface area of cylinder =1320 cm²44  

d=21 cm

r=10.5 cm

h=?

Curved surface area =1320

=2πrh=1320

=2×  22/7 ×10.5×h=1320

⇒h = 1320/60

h=20 cm

Hope it helps.....

Answer 2

C.S.A of cylinder =1320 cm²44

d=21 cm

r=10.5 cm

h=?

C.S.A =1320

=2πrh=1320

$= 2 \times \frac{22}{7} \times 10.5 \times h = 1320 \\ ⇒h = \frac{1320}{60} = { |20 = h| }^{} \\ h = 20cm$