Question

The Japanese 5 yen coin has a hole in the middle.

What are the possible ways to calculate the difference
between the distances from the outer edges and the
inner edges of the coin? Check all that apply.
22 mm
Subtract the two diameters and multiply by it
Calculate the circumference of the coin.
Add the two diameters and multiply by it
Subtract the circumference of the hole from the
circumference of the coin.
Calculate the radius of the hole.
5 mm​

Answer 1

Subtract the two diameters and multiply by 0.5

Step-by-step explanation:

Calculating the Radius of the hole gives distance to the inner edges WHILE the Radius of the coin gives us the distance to the outer edges.

By subtracting the output we can then get the difference between both distances.

If hole diameter = 5mm and coin diameter = 22mm

Difference = [(22 - 5)mm] ÷ 2

17mm / 2 = 8.5mm

Explanation:

Answer 2

Subtract the two diameters and multiply by 0.5

Explanation:

Calculating the Radius of the hole gives distance to the inner edges WHILE the Radius of the coin gives us the distance to the outer edges.

By subtracting the output we can then get the difference between both distances.

If hole diameter = 5mm and coin diameter = 22mm

Difference = [(22 - 5)mm] ÷ 2

17mm / 2 = 8.5mm