Find an equivalent form of that has a rational denominator.

MATHEMATICS · Single correct · ICSE · Mathematics · Pure Arithmetic · Pure Arithmetic

Problem

Find an equivalent form of

\dfrac{5}{\sqrt{20}}

that has a rational denominator. (a)

2\sqrt{5}

(b)

\dfrac{5\sqrt{5}}{2}

(c)

\dfrac{\sqrt{5}}{2}

(d)

\dfrac{1}{2}