15/100
45/x
cross multiply to get 15x = 4500
x = 300 minutes. 300 + 45 = 345 minutes in total.
You should just be able to divide 21/3 and you would get 7 so she would have 7 flowers.
The answer is 376.8 m.
It is given:
radius: r = 60 m
<span>π = 3.14
c = </span><span>π * d
d - diameter.
It is known that diameter is twice of radius:
d = 2r
So, implement it in the formula:
c = </span>π * d = π * 2r = 3.14 * 2 * 60 = 376.8 m