Answer:
360 degrees make a complete circle of length 2πr
= 2 ×22/7 ×10 inch = 62.8 in
so
360 degree make arc of length 62.8in
1 degree will make arc length 62.8/360 =0.17in
so
54 degree will make arc length of 54× 0.17= 9.4 in
Can't See picture. Can you re paste it or something.