ECZ 2017 · O-Level Paper 1 — Computer and Calculator
An incomplete program flow chart calculates the curved surface area S of a cone with base radius r and slant height l. The chart runs Begin → [input box] → [process box] → Output S → End. Which statements correctly fill the input and process boxes?
- A. Input S; then r = πSl
- B. Input r, l; then S = πrl
- C. Input r, l; then S = πr²
- D. Input r, l, S; then Output r
Verified working — step 1
The parallelogram (input) reads the given quantities r and l; the rectangle (process) computes the curved surface area using its formula S = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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