9. In fig.
10. Find the curved surface areå of cylinder whose radius is 7 cm and height 10 cm.
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2 thoughts on “9. In fig.<br />10. Find the curved surface areå of cylinder whose radius is 7 cm and height 10 cm.<br />​”

1. ★Given :

   • A cylinder whose radius is 7 cm and height 10 cm.

   ★ To find :

   • Curved Surface area

   ★ Solution :

   • By using the formula 2πrh We will get the curved Surface Area of Cylinder.

   ✰ Radius (r) = 7cm

   ✰ Height (h) = 10 cm

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   Let’s Find out…!

   Curved Surface area = 2πrh

   ➤ 2 × 22/7 × 7 × 10

   ➤ 2 × 22 × 10

   ➤ 440 cm²

   ∴ CSA of cylinder is 440 cm²

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   Reply

2. Given :-

   • Radius of the cylinder is 7 cm
   • Height of the cylinder is 10 cm

   To Find :-

   • Curved Surface area of that cylinder

   Solution :-

   ~Here, we’re given the radius and height of cylinder and we need to find the Curved Surface Area ( CSA ) . We can easily find the CSA by putting the values in it’s formula.

   As we know that ,

   ★ CSA of Cylinder = 2πrh

   Where,

   • π is 22/7
   • r is radius
   • h is height

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   Finding the CSA :-

   [tex]\sf \dashrightarrow 2 \times \dfrac{22}{7} \times 7\;cm \times 10\;cm[/tex]

   [tex]\sf \dashrightarrow 2 \times 22 \times 10\;cm[/tex]

   [tex]\boxed{\bf{ \bigstar \;\; CSA = 440 \; cm^{2} }}[/tex]

   _____________

   Therefore,

   • Curved Surface area of the cylinder is 440 cm²

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   Reply