Question

Find the ratio of diameter of the sun to the diameter of the earth, if the diameter of the sun and earth are $1.4\times {10}^9$ m and $1.275\times {10}^7$ m respectively.

Answer 1

$\frac{Dia.ofthesun}{Dia.oftheearth}=\frac{1.4\times {10}^2\times {10}^7}{1.275\times {10}^7}$
$=\frac{1.4\times {10}^2}{1.275}=\frac{1.4\times 100}{1.275}$
$=14\times 10\times \frac{1000}{1275}$
$=\frac{140000}{1275}$
$=109.8$