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Step-by-step explanation:

Area of the field = pi * r^2

r = 230/2 = 115

Area of the field = 3.14 * 115^2 = 41526.5 square feet.

Number of bags = 41526.5/400 = 103.82 bags

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.