1.

Find the circumference of a circle whose area is 1386 cm².(A) 42(B) 132 cm (C) 42 cm (D) 21 cmin2TheifheimIf it is doubled how many times will be​

Answer»

ANSWER:

Option B is correct

area is CIRCLE,

πr²= 1386

r²= (1386 ×7)/22

r=√441

r= 21cm

Circumference= 2πr

=2×22/7×21

=2×22×3

=6×22

=132cm



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