Question

please clarify my doubt​

Answer 1

$one \: hour \: take \: one \: rotation \\ radius = 15 \\ = 2\pi \: r = 2 \times 3.14 \times 15 \\ = 30 \times 3.14 = 94.2 \\ hope \: this \: helps \: you$

Answer 2

DEAR MATE, here is your answer:-

ANSWER:-

$length \: ofminute \: hand \: = 15cm \\ \\ so \: \: radius \: = 15cm \\ \\ \\we \: know \: that \: in \: one \: hour \: minute \: hand \: completes \: one \: rotation \\ \\ so \: distance \: to \: which \: tip \: of \: minute \: hand \: moved = 2\pi \: r = 2 \times 15 \times 3.14 = 94.2cm$

HOPE IT HELPS YOU.