During a total solar ecilpse the moon almost entirely covers the sphere of the sun. Write the relation between the distances and sizes of the sun and moon.

Explanation

As is clear drom fig. 1(EP).3.
`d omega = (piD_s^2//4)/(r_(se)^2) = (pi D_m^2//4)/(r_(me)^2)`
`:. (D_s)/(D_m) = (r_(se))/(r_(me)) or (R_s)/(R_m) = (r_(se))/(r_(me)).`