GCSE Maths Practice: circle-properties

Question 8 of 10

This question tests calculation of the area of a semicircle.

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\( \begin{array}{l}\text{A semicircle has radius 6 cm.}\\ \text{Calculate its area to 1 decimal place.}\end{array} \)

Choose one option:

Remember: semicircle area = 0.5 × π × r².

Students need to understand that the area of a semicircle is half the area of a full circle. This involves squaring the radius, multiplying by π, and then dividing by 2. Such problems reinforce understanding of fractions of areas, application of formulas, and proper rounding. Practising semicircle areas prepares students for sectors, segments, and composite shapes. Visualising the semicircle and marking the radius improves comprehension and accuracy.