Question

if the radius of a right circular cone is increased by 25 percentage then the percentage increase in the curved surface area is

Answer 1

Answer:

the percentage increased in the surface area will also be 25%

Step-by-step explanation:

let's understand it with example-

let the length of curved side b 49

let the radius of the cone be 28

25% of 28 is 7 and when we add both of them that equals to 35

so the new radius 35

formula of curved surface area=πrl

then find the area using the first radius that equals to 4312

curved surface area using II radius is equal to 5390

now you can find the increase in percentage that will come 25%