ABC26GN4283 · Area
Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:
Two concentric circles form a ring. The inner and outer circumferences of the ring ar 50 m and 75 m 7 7 respectively. Find the width of the ring.
Answer
Explanation
Let the inner and outer radii be r and R metres. 352 352 7 1 Then, 2 πr = ⇒ r= × × = 8 m. 7 7 22 2 528 528 7 1 2 πR = ⇒ R= × × = 12 m. 7 7 22 2 ∴ Width of the ring = (R – r) = (12 – 8) m = 4 m.
Explanation as extracted from the printed page; notation may be imperfect.
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