Question

cube root of 216×343

Answer 1

$\sqrt[3]{216 \times 343 } \\ \sqrt[3]{6 \times 6 \times 6 \times 7 \times 7 \times 7 } \\ \sqrt[3]{ {6}^{3} \times {7}^{3} } \\ 6 \times 7 = 42$
hence cube root of 216×343 is 42

Answer 2

6×6×6 ×7×7×7

then take 6 and 7 as common so

6×7 = 42