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Question
The outer and inner diameter of a circular ring are 34cm and 32cm respectively, then find the area of the ring.
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Solution
D= 34
R= 17
d= 32
r= 16
Area of the circle = pi*r²
area of the ring= area of outer circle - area of inner circle= pi (R²-r²)
=22/7{(17)²-(16)²}
= 22/7 * 33
= 103.714 cm2
R= 17
d= 32
r= 16
Area of the circle = pi*r²
area of the ring= area of outer circle - area of inner circle= pi (R²-r²)
=22/7{(17)²-(16)²}
= 22/7 * 33
= 103.714 cm2
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32
