Question

plzz plzzz solve it with explanations

Answer 1

first of all
√289=17
and
√121=11
I will use it below
$\sqrt{0.289 \div 0.00121 } = \sqrt{289 \times {10}^{ - 3} \div 121 \times {10}^{ - 5} } = \sqrt{289 \div 121 \times {10}^{2} } = 17 \div 11 \times \sqrt{ {10}^{2} } = 17 \times 10 \div 11 = 170 \div 11$
here is whole solution.... hope u will mark it as brainliest