Question

A wire is bent to form a circle of area 123cm square find the length of wire

Answer 1

Step-by-step explanation:

area of the circle=123cm

B/P πr² = 123

or, 22/7 * r²= 123

or, r² = 123*7/22

or, r² = 39.14

or, r= √39.14

or, r = 6.26

so, r= 6.26 cm

there for circumference of the circle = 2πr

= (2*22/7 * 6.26) cm

=275.44/7 cm

= 39.35 cm

therefore the length of the wire is 39.35cm (ans)