subject- MATHS
chapter - CIRCLES
guys wanna help from you in these questions.
kinda solve...
spam answers will be deleted √
plz solve all three :)
Have a happiest answering time....
~be brainly
Answers
1. Given
- Length of chord passing through the center of the cord is 10 cm
To Find
- The radius of the circle.
Solution
The chord mentioned above is the diameter.
Diameter ⇒ 2 × radius
Diameter ⇒ 2R
Radius ⇒ Diameter ÷ 2
Radius ⇒ 10 ÷ 2
Radius ⇒ 5 cm
∴ The radius is 5 cm
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2. Given
- Inner diameter of the race track ⇒ 10 cm
- Outer diameter of the race track ⇒ 14 cm
To Find
- The width of the circular race track
Solution
Width of the Circular Race Track = Outer Radius - Inner Radius
Outer Diameter ⇒ 14 cm
Outer Radius ⇒ Outer Diameter ÷ 2
Outer Radius ⇒ 14 ÷ 2
Outer Radius ⇒ 7 cm
Inner Diameter ⇒ 10 cm
Outer Radius ⇒ Outer Radius ÷ 2
Outer Radius ⇒ 10 ÷ 2
Outer Radius ⇒ 5 cm
Width of the Race Track ⇒ 7 - 5
Width of the Race Track ⇒ 2 cm
∴ The width of the following Circular Race Track is 2 cm
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3. Given
- Circle with center O has radius of ⇒ 2 cm
- Circle with center C has radius of ⇒ 3 cm
- The circles touch each other externally.
To Find
The distance between their centers
Solution
Distance Between Their Centers ⇒ Radius of Circle 1 + Radius of Circle 2
Radius of Circle 1 ⇒ 2 cm
Radius of Circle 2 ⇒ 3 cm
Distance Between Their Centers ⇒ 2 + 3
Distance Between Their Centers ⇒ 5 cm
∴ The distance between their centers is 5 cm
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