the area of a circle is 154cm square. find its circumference

AREA=154
RADIUS sq.  =154*7/22
R sq. =49
R=7
CIRCUMFERENCE=2*22/7*7=44 CM
  • 6
Area of a circle = πr2
so 154 = 22/7 x r2
r2 = ​154 x 7/22 
r= 49
r  = 7

than 
Circumfrence = 2​πr
= 2 x 22/7 x 7
= 44 

Hence circumfrence of circle = 44 cm
 
  • 15
44 cm
  • -1
area = 154 cm2

154= 22/7 * r2  ( r = radius)
154*7/22 = r2
r2 = 49
radius = 7
Circumference = 2* 22/7 * r = 2* 22/7 * 7
= 44 cm
  • 3
Diameter=8×2=16m diagonal =16 Area of square =[16×16]÷2=128msq
  • -1
44m ans
  • 0
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