Question

Curved surface area of right circular cone is4070cm it's slant height is 37 find the radius of base of the cone

Answer 1

Answer:

slant height of cone = 37cm

curved surface area of cone = 4070cm^

πrl = 4070

22/7×r×37 = 4070

22×r×37 = 4070×7

r = 28490÷814

r = 35

Answer 2

Answer:

CSA OF CONE = πrl

Given that csa of cone is 4070cm

slant height is 37cm

According to this

$4070 = \pi \: r \: l \\ 4070 = 22 \div 7 \times r \times 37 \\ 4070 \times 7 = 22 \times 37 \times r \\ 28490 = 814 \times r \\ 28490 \div 814 = r \\ 35 = r \\ h ence \: radius \: of \: cone \: is \: 35cm$