7.TheFne diarneter of the modiameterofthemoonisapproximatelyxmne fourt

1.	7.TheFne diarneter of the modiameterofthemoonisapproximatelyxmne fourth of the diameter of the earth.onefourthofthediameteroftheearth.
Answer» Let diameter of earth = D diameter of moon =D/4 =) radius of earth = D/2 =) radius of moon = D/8 earth and moon are like spheres. curved surface area of earth = 4π(D/2)^2 curved surface area of moon = 4π(D/8)^2 so ratio of their surface area = 64/4 = 16:1

7.TheFne diarneter of the modiameterofthemoonisapproximatelyxmne fourth of the diameter of the earth.onefourthofthediameteroftheearth.

Answer»

Let diameter of earth = D

diameter of moon =D/4

=) radius of earth = D/2

=) radius of moon = D/8

earth and moon are like spheres.

curved surface area of earth = 4π(D/2)^2

curved surface area of moon = 4π(D/8)^2

so ratio of their surface area

= 64/4 = 16:1