the diameter of two silver discs are in the ratio 2 : 3 what will be the ratio of their areas
Answers
Answered by
5
Area of a disc A = pi * d^2/4
Given d1:d2=2:3
from the area formula we get area is directly proportional to square of diameter
so a1:a2 = (d1/d2)^2
a1:a2= 4:9
any doubts comment ;)
Given d1:d2=2:3
from the area formula we get area is directly proportional to square of diameter
so a1:a2 = (d1/d2)^2
a1:a2= 4:9
any doubts comment ;)
Answered by
2
HII,,,....,,,
Silver discs are spherical...
Area of circle is πr².
1st disc area/2nd disc area=π(2/2)²/π((3/2)²
=1/(9/4)
Hence,
ratio of two discs are 1:9/4.
Silver discs are spherical...
Area of circle is πr².
1st disc area/2nd disc area=π(2/2)²/π((3/2)²
=1/(9/4)
Hence,
ratio of two discs are 1:9/4.
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