Question

PLEASE HELP!!!
a
300 cm
b
60 cm
c
20 cm
d
45 cm

Answer 1

45 cm

Explanation:

Let length of the field in the drawing = x

80 : 120 :: 30 : x

Product of extreme = Product of means

80 * x = 120 * 30

`x = (120*30)/(80)\\\\x = 15 * 3\\x = 45`