Question

A cylinder with 14m diameter is 10m deep. Find the curved surface area (n=22/7)

Answer 1

Answer:

curved surface area =2πrh

Step-by-step explanation:

diameter of following cylinder=14

: . Radius=7

height=10

: .curved surface area=2×22/7×7×10

=2×22×10

=440cm^2

Answer 2

Given:

• Diameter of the cylinder = 14m
• Height(depth) of the cylinder = 10m

To be found:

The Curved Surface Area (CSA) of the cylinder.

$\star$ The formula for finding the Curved Surface Area of a cylinder is

= 2πrh unit sq.

[∵ In which 'r' is the 'radius' and 'h' is the 'height' of the cylinder.]

But we need a radius instead of diameter.

We know that twice the radius is equal to the diameter, or half of the diameter is equal to the radius.

∴ Diameter = 2 × Radius

OR

∴ $Radius=\frac{Diameter}{2}$

So,

⇒ 14 = 2r

⇒ 14 ÷ 2 = r

⇒ 7 m = r

So, Radius if the cylinder is 7m.

Now,

Curved Surface Area of the cylinder

$= 2 \times \frac{22}{\not{7}} \times \not{7} \times 10$

$= 2 \times 22 \times 10$

$\boxed{= 440\ m^{2}}$

Hence,

The Curved Surface Area (CSA) of the cylinder is 440 m sq.