Question

diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.

answer this!!!!​

Answer 1

Answer:

Step-by-step explanation:

Given :-

Diameter= 10.5 cm

Radius,r = 10.5/2 cm = 5.25 cm

Slant height,l = 10 cm

To Find :-

Curved Surface Area

Formula to be used :-

Curved surface area of the cone = πrl

Solution :-

Putting all the values, we get

⇒ Curved surface area of the cone = 22/7 × 5.25 × 10)

⇒ Curved surface area of the cone = 165 cm²

Hence, the Curved surface area of the cone is 165 cm²

Answer 2

AnswEr :

• Slant Height ( l ) = 10 cm
• Diameter = 10.5 cm
• Radius ( r ) = 10.5 / 2 = 5.25 cm
• CSA of Cone = ?

⋆ Curved Surface Area of Cone :

⇒ πrl

⇒ 22 / 7 × 5.25 × 10

⇒ 22 × 0.75 × 10

⇒ 22 × 7.5

⇒ 165 cm²

∴ Curved Surface Area of cone is 165 cm².

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⋆ Some Information Related to Cone :

◗ Cone is a pyramid shape with a circular base and curved sides pointing at the end of the top.

◗ CSA = πrl

◗ TSA = 2πr( l + r )