Question

the circumference of circle is 220 find its radius and area pi=3.14
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Answer 1

Answer:

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Step-by-step explanation:

Step by step explanation:

Circumference of circle =2πr

= > 2 \times \frac{22}{7} \times r = 220=>2×

7

22

×r=220

= > r \times \frac{44}{7} = 220=>r×

7

44

=220

= > r = 220 \times \frac{7}{44}=>r=220×

44

7

= > r = 5 \times 7 = 35=>r=5×7=35

Therefore,radius is \bold{\red{35 \:unit}}35unit

= > area \: of \: circle = \pi {r}^{2}=>areaofcircle=πr

2

= \frac{22}{7} \times {(35)}^{2}=

7

22

×(35)

2

= \frac{22}{7} \times 1225=

7

22

×1225

\bold{= 175 \times 22 = 3850 {unit}^{2} }=175×22=3850unit

2

When take π=3.14

\bold{= > 3.14 \times 1225 = 3846.25 {unit}^{2}}=>3.14×1225=3846.25unit

Answer 2

Answer:

3853.53681536 units²

Step-by-step explanation:

Let radius = r

2πr=220

2 x 3.14 x r = 220

6.28 r = 220

r = 35.032 (approx.)

Area of circle = πr²

                      = 3.14 x 35.032 x 35.032  

                      = 3853.53681536 units²