Question

the circumference of a circle is 616m find it,s radius and area​

Answer 1

$\huge{\mathfrak{\underline{\underline{\purple{Answer}}}}} ✨$

Let the radius of the circle be "r"

Given circumference = 2$πr$ = 616cm

$→ πr$ = $\bold{\frac{616}{2}}$

$→ πr$ = 308cm

$→ r$ = 308($\bold{\frac{7}{22}}$)

$→ r$ = 14 × 7

$→ r =$ $\bold{\underline{\underline{98 m}}}$

Area = ${πr}^{2}$

$\bold{\longrightarrow{\frac{22}{7}} × 98 × 98}$

$\bold{\longrightarrow{\underline{\underline{30,184 m²}}}}$

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Hope it helps uh<33

Answer 2

Answer:

Radius and area​ of a circle are $98\ m$ and $30184\ cm ^{2}$ respectively .

Step-by-step explanation:

To find : radius and area​ of a circle .  

Given : circumference of a circle is 616m

Solution :

• As per given that we know that circumference of a circle is $616$ m. We are asked to find  radius and area​ of circle.
• We use following formula to find circumference of circle, using this formula we find radius of circle by substituting the given values.
• Circumference of circle $= 2\pi r$

                                           $616 = 2\times \frac{22}{7} \times r\\\\ r = \frac{616\times7}{2\times 22} \\\\ r = 14\times 7 \\\\ r = 98\ m$

• Hence , radius of circle is $98\ m$ .

• Area of circle = $\pi \times r^{2}$  

                               $= \frac{22}{7} \times (98)^{2} \\\\ = \frac{22}{7} \times 98\times 98\\\\ = 22\times14 \times98\\\\= 30184\ cm ^{2}$