Image caption, ...you've done it! The sectors rearranged into the rectangle show the area of the curved surface of the cone = Ï€ × radius × slant length.
The cones you will see in exams will be circular based. The formulas for the volume and surface area of a cone will be given to you in the exam. \(\text{Volume of a cone} ~=~ \frac {1}{3} ...
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