1.

The area of circle is 154 cm square then its circumference is

Answer»

a = 154CM square

r = ?

a=πr²

154=22/7*r²

r²=154 X 7/22

r²=1078/22

r²=49

r=7 cm

c=2πr

c=2*22/7*7

c=2*22

c=44



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