Coaching Centre
Chapter 1: Surface area and volume Notes
Converting units, accuracy of measurements, surface area and volume of prisms, cylinders, pyramids, cones and spheres, and composite solids.
Sections
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1A Units and accuracy of measurement Mastered
Converting units of length, area and volume, limits of accuracy, absolute error and choosing sensible precision.
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1B Surface area of pyramids and cones Mastered
Surface area of right pyramids using slant height, and the cone formula SA = πr² + πrs, with Pythagoras to find a missing slant height.
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1C Volume of pyramids and cones Mastered
The one-third rule V = ⅓Ah for pyramids and cones, finding unknown dimensions and composite solids.
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1D Spheres and composite solids Mastered
Surface area 4πr² and volume (4/3)πr³ of spheres and hemispheres, and composite solids made of cylinders, cones and hemispheres.