1:2000000 find the land distance 14cm b) 31 cm
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Given:
Radius of the cone = 5 ft
Slant height of the cone = 21 ft
To find:
The surface area of the cone
Solution:
Surface area of cone formula:
where r is the radius and l is the slant height.
The surface area of the cone is 130π square feet.
AB is a chord that passes through the center O, which means the central angles BOC and AOC are supplementary. So
Central angles and the arcs they subtend have the same measure, so that