Question

circumference of circle is 220m.find its diameter and area.
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Answer 1

Answer:

I have told you area only. Sorry

Step-by-step explanation:

For a circle,

circumference = 2πr

Area = πr

2

where r is the radius of the circle & π=22/7

∴ Given, circumference =220m

⇒2πr=220

⇒r=

2.22/7

220

⇒r=5×7

⇒r=35m

Area = πr

2

⇒ Area =

7

22

×35×35

⇒ Area = 3850m

2

∴ Area of the circle is 3850m

2

Answer 2

$\sf \pink{cricumfrence \: of \: circle \longrightarrow 2 \pi r} \\ \\ \sf \pink {\longrightarrow 220 = 22 \times \frac{22}{7} \times r} \\ \\ \sf \pink{\longrightarrow \frac{220}{22 } = \frac{22}{7} \times r} \\ \\ \sf \pink{\longrightarrow \frac{10 \times 7}{22} = r } \\ \\ \sf \pink{\longrightarrow \frac{70}{22} = r } \\ \\ \sf \pink{\longrightarrow 3.1m = r}$

So, The Diameter Is

$\sf \red{\longrightarrow 2 \times radius } \\ \sf \red{\longrightarrow 2 \times3.1 } \\ \sf \red{6.2m}$