ज्ञात कीजिए।
INCE
7.5 सेमी त्रिज्या के वृत्त का दृतीय तार काटकर एक 120 सेमी विज्या के दृतीय पहिए की परिधि पर लपेटा जाता है। तार
पहिए के केन्द्र पर बने कोण को ज्ञात कीजिए।
कीजिए कि
Answers
Answered by
1
Step-by-step explanation:
A circular wire of radius 7.5 cm is cut and bent along the circumference of a circle of radius 120 cm. Find the angle subtended at the centre of the hoop.
- Now radius of circle = 120 cm
- So circumference of circle is 2πr
- = 2 x π x 120
- = 240 π cm
- Now radius of circular wire is 7.5 cm
- Therefore circumference of wire will be 2 x π x 7.5
- = 15 π cm
- Now length of arc will be = 15 π cm
- So length of arc is rθ
- So l = rθ
- 15 π = 120 θ
- Or θ = 15 π / 120
- Or θ = π / 8
- So the angle which is subtended at the centre is π / 8 = 22.5 degree
Reference link will be
https://brainly.in/question/5930881
Similar questions
Science,
4 months ago
English,
4 months ago
Math,
4 months ago
Computer Science,
9 months ago
Math,
1 year ago