Neco Model Questions Vol1 2025 Mathematics Question 26

Practice objective / multiple choice question 26 from the 2025 Neco Model Questions Vol1 Mathematics examination.

Neco Model Questions Vol1 2025 Mathematics Objective / Multiple Choice Hard Difficulty
Question 26 NECO_MODEL_QUESTIONS_VOL1 • 2025 • MATHEMATICS • objective

A right circular cone is topped with a hemispherical roof. The cone and the hemisphere have the same base radius \(r\) and the cone has height \(h\). The total surface area (excluding the base) of the combined tank is \(1200\) m\(^2\) and the total volume of water it can hold is \(5000\) m\(^3\). Find the radius \(r\) of the tank, correct to the nearest tenth of a metre.

Answer Options

Correct Answer A. 10.2 m
B. 11.5 m
C. 12.0 m
D. 9.8 m
Correct Answer
A
Correct Option:
10.2 m

About This Question

This is Neco Model Questions Vol1 2025 Mathematics Question 26. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Mathematics examination.

Difficulty level: Hard .

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