Question

the curve surface area of cone is 4070 square cm and its diameter is 70 cm what is a slant height

Answer 1

d = 70
R = 35
CSA of cone = πRl
4070 = 22/7 * 35 * l
4070/35 = 22/7 * l
814/7 * 7/22 = l
37 cm = l

Answer 2

Answer:

slant height l= 37cm

Step-by-step explanation:

Given that CSA of cone is 4070cm²

Diameter of cone = 70cm

Radius of cone = d/2=70/2=35cm

CSA of cone = πrl

πrl = 4070

22/7*35*l = 4070

22*5 l = 4070

110 l = 4070

l = 4070/110

l = 37 cm