1.

The radius of base of a right circular cone is 4 cm. Its height is 1 cm less than the radius of base. Find the curved surface of the cone(in square cm).(Use π = 3.14)1). 60.22). 62.83). 63.94). 66

Answer»

The radius of base of a right circular CONE is 4 cm. Its HEIGHT is 1 cm LESS than the radius of base.

So, height will be 3 cm.

SLANT height = √ (4 × 4 + 3 × 3) = 5 cm

∴ Curved surface area = π RL = 3.14 × 4 × 5 = 62.8 square cm


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