Question

The curved surface area of a right circular cone is 12320 cm 2 if the radius of its base is 56 cm , find its height

Answer 1

Answer:I hope my answer is right

Answer 2

Answer:

GIVEN :-

❥ Radius of a right circular cone (r) = 56 cm

❥ Curved surface area of a right circular cone = 12320 cm²

Step-by-step explanation:

➵ πrl = 12320

➵ $\frac{ 22 }{ 7 }$ × 56 × l = 12320

➵ l = $\frac{ 12320 \: × \: 7 }{ 22 \: × \: 56 }$

➵ l = 70

Height of the cone = $\sqrt{ 70² \: - \: 56² }$

• $\sqrt{ 4900 \: - \: 3136 }$
• $\sqrt{ 1736 }$
• 42 cm

Therefore, the height of a right circular cone is 42 cm.