Question

Find the curved surface area of a cone having radius 21 cm and slant height 5cm.​

Answer 1

Answer:

330 cm²

Step-by-step explanation:

given =

radius (r) = 21 cm

slant height (l) = 5 cm

to find =

surface area of the cone

solution =

curved (lateral) surface area of cone = πrl

= 22/7 × 21 × 5 cm²

= 22×21×5/7 cm²

= 22×3×5 cm²

= 330 cm²

hope it helps.

Answer 2

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