22-01-2023
Mathematics

Answered

The diagram shows sector OACB of a circle with centre O and radius 12 cm. Reflex angle AOB = 210° The diagram also shows a hollow cone with vertex O. The curved surface of the cone is formed by joining OA to OB. Arc ACB forms the circumference of the base of the cone. 12 cm 210° с 12 cm B A B 12cm C Calculate the volume of the cone. Give your answer correct to 3 significant figures. Curved surface area of cons - xri 1/3 Volume of cone - xx¹h h

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