The answer to the two questions about total surface area and lateral surface area are; Tripling the radius will increase the total surface area and the lateral surface area is 464.7 cm²
Surface Area of a cone
The formula for the total surface area of a right circular cone is;
T.S.A = πrl + πr²
4) Cone has the following dimensions;
Radius; r = 2.9 m
Slant Height; l = 13.8 m
Thus, if we triple the radius, we have;
T.S.A = π(3 * 2.9 * 13.8) + π(3 * 2.9)²
T.S.A = 195.75π
But if we triple the slant height, we have;
A = π(2.9 * 3 * 13.8) + π(2.9)²
A = 128.47π
Thus, tripling the radius will increase the surface area
B) Formula for lateral surface area of a cone is;
L.S.A = πrl
L.S.A = π * 14.8 * 10
L.S.A ≈ 464.7 cm²
Read more about surface area of a cone; https://brainly.com/question/6613758
