Question

Find the total surface area of cone whose diameter of the base is 14m and slant height is 25 meter.​

Answer 1

Answer:

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Answer 2

Given :

• Diameter of the base is 14 m.
• Slant height is 25 m.

To find :

• Total surface area of cone.

Solution :

• Diameter = 14 m
• Slant height = 25 m

Then,

Radius = Diameter/2

→ Radius = 14/2 m

→ Radius = 7 m

Formula Used :-

${\boxed{\large{\bold{TSA\:of\: cone=\pi\:r(r+l)}}}}$

Where,

• r = Radius
• l = Slant height

Total surface area of cone ,

$\to\sf{\pi\:r(r+l)}$

$\to\sf{\dfrac{22}{7}\times\:7(7+25)\:m^2}$

$\to\sf{22\times\:32\:m^2}$

$\to\sf{704\:m^2}$

Therefore, the total surface area of the cone is 704 m² .