Question

find the value of 1 upon 2 root 5. If 5=2.226

Answer 1

Answer:

$\frac{1}{2 \sqrt{5} } = \frac{1}{2 \sqrt{5} } \times \frac{2 \sqrt{5} }{2 \sqrt{5} } = \frac{2 \sqrt{5} }{(2 \sqrt{5)^{2} } } = \frac{2 \sqrt{5} }{2 \times 2 \times \sqrt{5} \times \sqrt{5} } = \frac{2 \sqrt{5} }{20} \: now \: on \: putting \: the \: value \: of \: \sqrt{5} we \: get \: = \frac{2 \times 2.226}{20} = \frac{4.452}{20} = 0.2223$