A sphere is a perfectly round solid figure. All points on the surface of the shape are the same distance away from the centre – we call this distance the radius. The formula for the volume and ...
2 \end{array}\) In the exam \(\text{Surface area} = 4 \pi r^2\) is given on the formula sheet A hemisphere is half of a sphere. The volume can be found by calculating the volume of the whole ...
3. Assume that a grain of sand is basically a sphere, with a radius of 0.025 cm. The volume of a sphere can be found using the formula Volume of a Sphere = 4/3 πr 3 Calculate the volume of a ...
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