Math help for explanation?

A rectangular field 120 m long has an area of 9600 m°.Rishi runs 15 times around the field. What distance does he covers?

Area is measured in square meters (m²), not m°.

width = area / length = 9600 m² / 120 m = 80 m

perimeter = 2 (120 m + 80 m) = 400 m

15 times around the field = 15 * 400 m = 6000 m = 6 km

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Well,
S = 9600 m^2
L = 120 m
so :
Width = 9600/120 = 80 m
so
perimeter = P = 2(L + W) = 400m which corresponds to 1 turn

therefore: with 15 turns he covers : 15 . 400 = 6000 m = 6km

hope it' ll help !!

120x = 9600

x = 80m

(120 + 120 + 80 + 80) x 15 = 6,000m

A rectangular field 120 m long has an area of 9600 m°.
Rishi runs 15 times around the field.
What distance does he cover?
Perimeter of the rectangular field is 400 m.
Rishi runs 6 km around the field.