Question

if the circumference of circle sheet is 154m,find it's radius. also, find the area of the sheet​

Answer 1

the rule for circumference of a circle = 2 radius

to find the radius= 154=2*22/7*r

                      154*7=2*22*r

                         1078  =44*r

                       r=1078/2

                       r=44/2

                         538/22

                   radius=24.5rule for are of a cirlce = r^2

                   =22/7*24.5*24.5

                   area= 1886.50m^2

Answer 2

$\Large{\textbf{\underline{\underline{According\;to\;the\;Question}}}}$

Given,

C(Circumference) of circle = 154 m

As we know that,

Formula :-

Circumference of circle = 2πr

Now,

Using Formula we have,

Circumference of circle = 2πr

⇒ 154 = 2πr

⇒ 154 = 2 × 22/7 × r

⇒ 49/2 = r

⇒ r = 24.5 m

Also,

We know that [Area of circle = πr²]

Using Formula :-

Ares of circle = πr²

⇒ Ares of circle = 22/7 × 24.5 × 24.5

⇒ Ares of circle = 1886.5 m²

Therefore,

Area of the circle = 1886.5 m²