The total perimeter of a semicircle is $$\(19.02 \mathrm{~cm}\)$$. Calculate the radius of the semicircle. $$\(.................\mathrm{cm}\)$$
Exam No：0580_s20_qp_23 Year：2020 Question No：12
Answer:
\(3.7[0]\) or \(3.689\) to \(3.699 \ldots\)
Knowledge points:
E5.3.1 Carry out calculations involving the circumference and area of a circle. (Answers may be asked for in multiples of π.)
E5.3.2 Solve problems involving the arc length and sector area as fractions of the circumference and area of a circle.
Solution:
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