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CBSE Class 9 Answered

The distance of the moon from the earth is 60 times the radius of the earth and the radius of the earth is 6300km. If it subtends an angle of 16 minite at earth. Fund the radius of moon
Asked by anvisam16 | 27 May, 2019, 04:48: PM
answered-by-expert Expert Answer
Since distance between earth and moon is larger than diameter of moon, let's consider the diameter as arc (l)
so,
l=rθ
l=2Rm
r=60Re=378000
straight theta equals 16 apostrophe equals 16 cross times fraction numerator straight pi over denominator 60 cross times 180 end fraction 2 Rm equals 378000 cross times 16 cross times fraction numerator straight pi over denominator 60 cross times 180 end fraction Rm equals 378000 cross times 16 cross times fraction numerator straight pi over denominator 60 cross times 180 cross times 2 end fraction Rm equals 879.64 space km
Answered by Arun | 28 May, 2019, 09:43: AM

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