Question

*If the circumference of a circle is 110 cm, what is the radius of that circle?*

1️⃣ 35 cm
2️⃣ 10.5 cm
3️⃣ 17.5 cm
4️⃣ 45 cm​

Answer 1

Answer:

35

Step-by-step explanation:

Answer

⇒  The circumference of a circle =110cm

⇒  2πr=110

⇒  2×  

7

22

​  

×r=110

⇒  r=110×  

22

7

​  

×  

2

1

​  

 

⇒  r=  

2

35

​  

 

⇒  r=17.5cm

⇒  Diameter of circle (d)=2r=2×17.5cm=35cm

Answer 2

$\large\underline\fcolorbox{red}{cyan}{r=17.5\:cm}$

Step-by-step explanation:

• Circumference : 110 cm

• Radius(r) = ?

$= > \bf \color{red}{circumference = 2 \times \pi \times r} \\ = > 2 \times \frac{22}{7} \times r = 110 \\ = > \frac{44}{7} \times r = 110 \\ = > r = 110 \times \frac{7}{44} \\ = > \boxed{r = 17.5}$