GCSE Maths Practice: surface-area

Question 6 of 10

This question focuses on finding the total surface area of a hemisphere.

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\( \begin{array}{l}\text{Find the total surface area of a hemisphere with radius } 6\,\text{cm}, \\ \text{giving your answer in terms of } \pi.\end{array} \)

Choose one option:

Add curved area and base area for hemisphere surface area. Keep units squared.

A hemisphere is half a sphere plus its base circle. Total surface area = 2πr² (curved half) + πr² (base) = 3πr². For radius 6 cm: 3π × 36 = 108π cm². Understanding how to combine the curved and flat parts is crucial for hemispherical objects like domes or bowls. Practice with different radii to reinforce calculation skills and visualizing the surfaces.