Question

6. The volume of right circular cylinder is 1100cu.cm and the radius of its base is 5cm find it's surface area. ​

Answer 1

Answer:

Height = 14cm

Curved Surface Area = 440cm²

Step-by-step explanation:

Volume = $\pi$R²h

1100 = (22/7) × 5² × Height

Height = 14cm

Now,

Curved Surface Area = 2$\pi$Rh = 2 × (22/7) × 5 × 14 = 440cm²

Answer 2

Answer:

Volume of right circular cylinder=πr²h

1100=22/7×5×5×h

h=1100×7/22×1/5×1/5

h=2×7

h=14cm

T.S.A. of right circular cylinder

=2πr(h+r)

=2×22/7×5×(5+14)

=2×22/7×5×19

=4180/7cm²

=597.14cm²

Therefore, it's surface area is 597.14cm².