Question
A cone has radius 3 cm and height 4 cm. Find its slant height and curved surface area. (NCERT Class 10, Surface Areas – Important)
Answer: Slant height l=√(r²+h²)=√(9+16)=5 cm. CSA=πrl=π×3×5=15π cm².
Question
Answer: Slant height l=√(r²+h²)=√(9+16)=5 cm. CSA=πrl=π×3×5=15π cm².
Question
Answer: Slant height l=√(r²+h²)=√(9+16)=5 cm. CSA=πrl=π×3×5=15π cm².