A washer is in the form of a ring whose area is 22 cm2
. if the radius of the outer circle of
this ring is 3 cm, find the width of the ring.
Answers
Answered by
1
Answer:
5cm
this is the answer
Answered by
8
Answer:
1.414cm
Step-by-step explanation:
Given,
- Area of the ring :- 22cm²
- Radius of the outer circle :- 3cm
To find,
- Width of the ring or radius of the inner circle
Formula :-
- a = π(R²-r²)
where R = radius of outer circle,r = radius of inner circle
Substitute the values from the formula :-
- a = π(R²-r²)
- 22 = 22/7(3²-r²)
- (22 on both sides are cancelled)
- 7 = 3²-r²
- r² = 9 - 7
- r = √2
- r = 1.414cm
Hope it helps
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