find out circumference of a circle if its area is 154 cm ²
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Answered by
1
Hi, alright the way to solve this is to apply the two formulas.
AREA OF A CIRCLE= 22/7 * r^2 cm^2
THEREFORE
154= 22/7 * r^2
So r^2 = 154*7/22
= 49 cm^2
SO r= 7
Now, Circumference of this is going to be 2* 22/7 * r
= 44/7 * 7
= 44 cm
AREA OF A CIRCLE= 22/7 * r^2 cm^2
THEREFORE
154= 22/7 * r^2
So r^2 = 154*7/22
= 49 cm^2
SO r= 7
Now, Circumference of this is going to be 2* 22/7 * r
= 44/7 * 7
= 44 cm
Answered by
0
Answer:
44 cm
Explanation:
Area = 154 cm
πr = 154
22/7 πr=154
πr = 154×7/22
πr = 7
Circumference of circle = 2 πr
= 2×22×7/7
=44cm
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