I will give brainiest to whoever answers correctly !!

Step-by-step explanation:

a) The interest generated over the 9 months is how much the woman paid for use of the money, then:

Therefore , the woman paid $945 for the use of the money.

b) The total amount that she repaid the bank is:

Finally we have that the woman paid $3945 to the bank

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Solution:

Given that Japanese 5 yen coin has a hole in the middle. If the diameter of the coin is 22 mm and the diameter of the hole is 5 mm,

So, Our Equation will be 22/5 - 5/2 mm

Let's Solve this Equation ;

☛ 22/5 - 5/2

☛8.5 mm

Therefore, Required Answer is 8. 5 mm .