NABTEB Mathematics 2022 Objective — Question 24
Question 24 of 50 from the National Business and Technical Examinations Board (NABTEB) Mathematics 2022 Objective paper, with the correct answer and a full explanation.
Advertisement
A cylinder opened at one end has a radius of 3.5cm and a height of 8cm. Calculate the total surface area. [Take pi=22/7]
- A. 126.5cm^2
- B. 165.0cm^2
- C. 212.0cm^2
- D. 214.5cm^2Correct
Explanation
T.S.A (open at one end) = curved surface area + area of one end = 2*pi*r*h + pi*r^2 = pi*r(2h+r) = (22/7) x 3.5 x (16+3.5) = 214.5cm^2.
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.