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What is the ratio of the base radius and slant height of a cone ,ade by rolling up a sector of central angle 60° ?

A1 : 3

B1 : 2

C1 : 4

D1 : 6

Answer:

D. 1 : 6

Read Explanation:

R= radius of sector Slant height of cone = Radius of sector (R) Base radius of cone = r = 𝚹/360 x R = R/6 ratio = R/6 : R = 1: 6


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