Question

Q28. Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. The
curved surface area is:
O 150 sq cm
O 165 sq cm
Ο Ο Ο Ο
177 sq cm
180 sq cm
OB ed
hp​

Answer 1

Answer:

165 cm²

Step-by-step explanation:

Diameter of Cone = 105/10 = 21/2 cm.

Radius of Cone = 21/4 cm.

Slant height = 10 cm.

Curved Surface Area = πrl.

C.S.A = 22/7 × 21/4 × 10.

C.S.A = 165 cm².

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