Diameter of moon is one fourth of earth then compare their volumes and curved surface areas
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Let the radius of the moon be r cm.
So,the radius of the earth is 4r cm.
Ratio of their volumes=Volume of earth : Volume of earth
=(4/3)π(4r)³ : (4/3)π(r)³
=64r³ : r³
=64 : 1
RAtio of their CSA=CSA of earth : CSA of moon
=4π(4r)² :4π(r)²
=16r² : r²
=16 : 1
So,the radius of the earth is 4r cm.
Ratio of their volumes=Volume of earth : Volume of earth
=(4/3)π(4r)³ : (4/3)π(r)³
=64r³ : r³
=64 : 1
RAtio of their CSA=CSA of earth : CSA of moon
=4π(4r)² :4π(r)²
=16r² : r²
=16 : 1
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