The area of a circle is 15400 metre square find its circumference
Answers
Answered by
1
Step-by-step explanation:
area of circle = 15400
circumference = ?
area of circle = πr^2
15400 = 22/7 × r^2
15400×7/22 = r^2
r^2 = 4900
r = 70
circumference = 2πr
= 2 × 22/7 × 70
= 2× 22×10
= 440 m^2
Answered by
1
Answer:
440m
Step-by-step explanation:
ar. = 15400
r = ?
A.T.Q
=> Ar. = πr²
=> 15400 = 22/7 × r²
=> 15400 × 7 / 22 = r²
=> 4900 = r²
=> r = √4900
=> r = 70m
After find (r) we find circum.
=> 2πr
=> 2×22/7 × 70
=> 2 × 22 × 10
=> 440m
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