Question

plz give this question answer in full explaination. if you give me this answer in full explaination i will mark you as brainlist i am promising you

Answer 1

Answer:

$\: if \: \sqrt{1521} = 39 \\ so \: \sqrt{0.1521 } = 0.39 \\ because \: 0.39 \times 0.39 = 0.1521 \\ and \: \sqrt{15.21} = 3.9 \\ because \: 3.9 \times 3.9 = 15.21 \\ so \: \sqrt{0.1521 } + \sqrt{15.21} \\ = 0.39 + 3.9 \\ =4.2 9$