Question

Compare the size of a red blood cell which is 0.000007 m metre to that of a plant cell which is 0.00001275 ( compare means to find the ratio)

Answer 1

HERE.....

The Fraction will be.....

$\begin{lgathered}\frac{0.000007m}{0.00001275m} \\ \\= \frac{0.000007m}{0.00001275m} \times \frac{ {10}^{8} }{ {10}^{8} } \\ \\ \large\red{\texttt{{(since \: there \: are \:upto \: 8 }}}\\ \large\red{\tt{decimals \:in \: the \: denominator)}} \\ \\= \frac{700}{1275} \\ \\ = \frac{28}{51}\end{lgathered}$

THEREFORE, The RATIO = 28 : 51....

THERE YOU GO!!!