Question

5) The lateral surface area of a conical tent of height 12m and radius 5m is

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Answer 1

Answer:

The lateral surface area of cone is 204.1 m².

Step-by-step explanation:

Given: Height = 12 m and radius = 5 m

w.k.t., lateral surface area of cone is πrl, where r is the radius of the base of cone and l is the slant height of the cone.

Also, l² = h² + r²

⇒ Slant height, l = √(h²+r²)

⇒ l = √(12² + 5²)

⇒ l = √(144+25)

⇒ l = √169

⇒ l = 13 m

⇒ Lateral surface area of conical tent = πrl

⇒ Lateral surface area of conical tent = 3.14 × 5 × 13

⇒ Lateral surface area of conical tent = 204.1 m²

Answer 2

Answer:

lateral surface area = π.r.l

=(22/7)*5*13

=204.285714 metre square