Question

Show work on how to match them

Answer 1

9.A
10.C
11.B
12.D
to find circumference you do C=D times pi if you are given the radius then you double the radius to get the diameter and do the equation

Answer 2

C≈53.4 units

C≈28.3 units

C=20.4 units

C=75.4 units

Solution:

• Circumference of a circle:
• C=πd
• Or
• C=2πr
• where
• π=3.14...
• d=diameter
• r=radius
• Plug in the values:
• C=2π(8.5)
• C=17π
• C≈53.4 (match "radius=8.5 units" to "53.4 units")
• C=π(9)
• C≈28.3 units (match "diameter=9 units" to "28.3 units")
• C=π(6.5)
• C=20.4 units (match "diameter=6.5 units to "20.4 units")
• C=2πr
• C=2π(12)
• C=24π
• C=75.4 units (match "radius=12 units" to "75.4")

Hope it helps.

Do comment if you have any query.