Question

If the circumference of a circle is 308cm, find its radius and also find its area

Answer 1

Answer:

$circumference \: = 2\pi \: r$

2*(22/7)* r = 308

r = (308*7)/(2*22)

r = 49 cm

So radius of the circle is 49 cm.

Now,

$area \: of \: circle \: = \pi \times {r}^{2}$

Area = (22/7)*49*49

Area = 22*7*49

Area = 7546 cm^2

Hope it may help you.

Answer 2

Answer:

7551.44 cm²

Step-by-step explanation:

C = 2πr

308 = 2×3.14×r

308 = 6.28r

r = 308/6.28

r = 30800/628

∴ r = 49.04cm

hence,

Area = πr²

        = 3.14 × 49.04²

        = 3.14 × 2404.92

        = 7551.44 cm²