Question

find the curved surface area of a cylinder of radius 14cn and height 21 cm​

Answer 1

Answer:

1848 sq.cm

Step-by-step explanation:

Gɪᴠᴇɴ :

• radius = 14 cm
• height = 21 cm

Tᴏ Fɪɴᴅ :

• C.S.A. of cylinder

Sᴏʟᴜᴛɪᴏɴ :

Curved surface area of cylinder = 2πrh

⇒ 2 × 22/7 × 14 × 21

⇒ 1848 sq.cm

Hence, CSA of cylinder is 1848 sq.cm

Answer 2

Answer:

The answer is -

= 1848$cm^{2}$                                                          

Step-by-step explanation:

To find the curved surface area of a cylinder of radius 14 cm and height 21 cm

Step : Follow the formulas

As we know that curved surface area of a cylinder = 2$\pi$$rh$

Where r = radius and h = height

Radius = 14 cm(Given)

Height = 21 cm(Given)

Curved surface area of the cylinder -

= 2$\pi$$rh$      

As $\pi$ = 22/7 (like always [this is an approximate value of $\pi$])

So,

= 2$\pi$$rh$  

= 2 X $\frac{22}{7}$ X 14 X 21

= 2 X 22 X 2 X 21

= 44 X 42

= 1848$cm^{2}$      

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