Neco Model Questions Vol1 2018 Mathematics Question 24
Practice objective / multiple choice question 24 from the 2018 Neco Model Questions Vol1 Mathematics examination.
A closed rectangular box is made of thin sheet metal. Its length and width are both equal to the diameter of a right circular cylindrical tank that fits exactly inside the box, and its height equals the height of the tank. The cost of the sheet metal for the box is ₦12 per cm\(^2\) and the cost of the metal for the tank (including its curved surface and two circular ends) is ₦20 per cm\(^2\). If the total cost of the box and the tank together is ₦30 000, and the volume of the cylindrical tank is 1800 cm\(^3\), determine the radius of the tank (in cm) correct to two decimal places.
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About This Question
This is Neco Model Questions Vol1 2018 Mathematics Question 24. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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