The difference between the circumference and the diameter of circle is 90cm.Find the radius of the circle.
Answers
Answered by
2
Answer:
Circumference = 2πr , Diameter = 2r
2πr - d = 90
→ 2πr - 2r = 90
→ 2 × 22/7 × r - 2r = 90
→ 44/7r - 2r = 90
→ (44-14)r/7 = 90
→ 30r/7 = 90
→ r = (90 × 7)/30
→ r = 21
Therefore , Radius = 21 cm.
Answered by
0
Answer:
radius= 180cm
Step-by-step explanation:
c-d= 90cm
2πr-d= 90cm
2×22/7×r-d= 90cm
44/7×r-d = 90
r-d=90cm
r-r/2= 90
2r-r/2= 90
r/2= 90
r= 90×2
r= 180
therefore, radius= 180cm
Similar questions