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PALLAVI AZAD

· started a discussion

· 1 Months ago

tell me concept (Question: 364641.0 )

How became 30x

Question:

A spherical ball is covered with two colours blue and orange. The ratio of area covered by blue and orange colours on the whole ball is 2:3. The ratio of area for blue and orange colours on the upper part of the ball is 1:2. Find the ratio of area covered by blue and orange colours on the lower half. 

Options:
A)

7 : 9

B)

5 : 9

C)

7 : 8

D)

7 : 11

Solution:

Ans:(c) 


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