GCE Mathematics 2024 Objective — Question 15
Question 15 of 50 from the General Certificate of Education (GCE) Mathematics 2024 Objective paper, with the correct answer and a full explanation.
Advertisement
Make R the subject of the relation V=πl(R²−r²)
- A. A. R=√(V/πl)+r²
- B. B. R=√(V/πl−r²)Correct
- C. C. R=√(V−πlr²)
- D. D. R=√(V+πlr²)
Explanation
V=πl(R²−r²). Divide both sides by πl: V/πl=R²−r². Then R²=V/πl+r². Then R=√(V/πl+r²).
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.