Q.
Find the curved surface area of the cone if the radius and height are 43
units and 16 units respectively.
Answers
Formula:
If r units be the radius and h units be the height of a cone (if mentioned with such data which may indicate the cone to be right circular, we take it as a right circular cone), then its curved surface area is measured by
A = πr {r + √(h² + r²)} unit²
Solution:
For the given cone,
radius (r) = 43 units and
height (h) = 16 units
∴ the surface area of the cone
= π * 43 * {43 + √(16² + 43²)} unit²
= π * 43 * {43 + √(256 + 1849)} unit²
= (22/7) * 43 * (43 + √2105) unit²
= 12011.53 unit²
Answer:
Method:
In the event that r units be the radius and h units be the height of a cone (whenever referenced with such information which may demonstrate the cone to be correct roundabout, we accept it as a correct round cone), at that point its curved surface zone is estimated by
A = πr {r + √(h² + r²)} unit²
Arrangement:
For the given cone,
range (r) = 43 units and
height (h) = 16 units
∴ the surface zone of the cone
= π * 43 * {43 + √(16² + 43²)} unit²
= π * 43 * {43 + √(256 + 1849)} unit²
= (22/7) * 43 * (43 + √2105) unit²
= 12011.53 unit²