anjalisahktr2006 anjalisahktr2006

31-01-2021
Mathematics

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if the diameter of the concentric circles as shown in the given figure are in the ratio 1:2:3 then find the ratio of the areas of three regions

if the diameter of the concentric circles as shown in the given figure are in the ratio 123 then find the ratio of the areas of three regions class=

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jimrgrant1 jimrgrant1

31-01-2021

Answer:

1 : 4 : 9

Step-by-step explanation:

Given the ratio of diameters = a : b , then

ratio of areas = a² : b²

Here ratio of diameters = 1 : 2 : 3 , so

ratio of areas = 1² : 2² : 3² = 1 : 4 : 9

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tenacox66 tenacox66

31-01-2021

1:4:9 hopefully it will be correct

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