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The volume of a frustum of a cone of height h is given by the...

The volume of a frustum of a cone of height h is given by the formula 
V = 1/3πh(R² + Rr + r²),
where R and r are the radii of it's circular ends.
Hollow metal hemispheres of internal and external diameters 12.5 cm and 17.5 cm, respectively, are to be cast from the molten contents of a ladle in the shape of a frustum of a cone of depth 1.2 meters and radii of ends 0.6 m and 0.675 m. Calculate the number of hemispheres that can be cast. [WAEC]?
In Mathematics
1 Answers Available
Asked by Kill you here on 22nd May, 2020
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free