Question

the curved surface area of right circular cone is √5 times of its base area, what will be the ratio of the hight and the length of the radius of the cone
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Answer 1

Answer:

• 1 is the answer

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

Radius of cone = 7 cm

Curved surface area of cone = 220 cm2  

Formula used:

Curved surface area of cone = πrl

Where, r = radius of cone

l = slant height of cone

h = height of cone

l2 = r2 + h2

Calculation:

220 = π × 7 × l

⇒ l = 220/22 = 10 cm

Also,

102 = 72 + h2

⇒ h2 = 100 – 49 = 51

⇒ h = √51 cm

∴ The height of the cone is √51 cm.