Question

surface area is 4070,radius =70 find slant height. ​

Answer 1

Answer:

Step-by-step explanation:

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Curved surface area of a cone =πrl, where r is the radius of the cone and l is the slant height.

Radius =  

2

Diameter

​  

=35 cm  

Hence, curved surface area of this cone =  

7

22

​  

×35×l=4070  

⇒l=  

22×35

7×4070

​  

 

⇒l=37 cm

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Answer 2

$\huge \color{cyan}Answer :$

Curved surface area of a cone =πrl, where r is the radius of the cone and 1 is the slant height.

Radius = Diameter/2 =35 cm

Hence, curved surface area of this cone = 22/7 ×35× 1 =4070

⇒1 = 7×4070/22×35

⇒1 =37 cm