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165 pagesrevision 46935
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Aitchison College Academic Resources.
NOT TO
ia SCALE
8cm
A cone has base diameter 8cm and perpendicular height 15cm.
(i) Calculate the volume of the cone. l.>
[The volume, V, of a cone with radius r and height h is V = sar.)
V= “nl uy xi
y = abl 35 251-33
(ii) A label completely covers the curved surface area of the cone.
Calculate the area of the label as a percentage of the total surface area of the cone.
[The curved surface area, A, of a cone with radius r and slant height / is A = mr/.]
o-S-A > 1 (uylvaur)
= 195-08
gota) Aron > CS -A4 bole Pree 6
> 146-0% + aly 4
~ quo 38 yr a6 el
-
195 “08 x 1004-
4s 4 274° TOS
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