Question

the radius and slant height of a cone are in the ratio of 3:5. if its curved surface area is 2310 cm2 find its radius height and slant height

Answer 1

Let the radius be 3x and the slant be 5x.
The curved surface area of a cone is πrl.
Therefore,

πrl=2310
22/7×3x×5x=2310
15x²=2310×7/22
15x²=735
x²=735/15
x²=49
x=under root 49
x=7

Now when x=7
radius=3x=3×7=21
height=5x=5×7=35

This is ur ans
hope it helps u..

Answer 2

Answer:

answer hai 7,is the correct option