Question

the curved surface area of a cone is 4070 cm 2 and its radius is 35 cm . what is slant height ?​

Answer 1

Answer:

Given, Diameter =70 cm ⇒ radius r=35 cm

Curved surface area of a cone =4070 cm

2

Since, curved surface area of cone =πrl

⇒4070=

7

22

×35×l

⇒4070×

22

7

×

35

1

=l

⇒l=37 cm

∴ slant height of cone =37 cm

Answer 2

Answer:

∴ slant height of cone =37 cm.