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Form 4 Mathematics Paper 1 Sample Revision Questions and Answers Set 1

The figure below represents a circle centre O and radius 18cm. The minor sector AOB subtends an angle of $140^0$ at the centre of the circle. The sector is cut off and folded into a cone.

(Take $pi$ = $2/27$ ), calculate
(a) The radius of the cone so formed.
(b) To one decimal place, the height of the cone.
(c) To the nearest whole number, the capacity of the cone.

(6m 46s)

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