The diameter of Ann's drum is 40 cm more than the radius. What is half the circumference of the drum?
A.
120 cm
B.
\(80 \pi \mathrm{~cm}\)
C.
60 cm
D.
40 cm
Exam No：2018 First Round Grade 5 Year：2018 Question No：20
Answer:
D
Knowledge points:
G5 - Geometry - Area (Composite Shapes)
Solution:
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