In 30 minutes the minute hand makes half a turn around the clock, so it sweeps half a circle.
Given the radius , the area of a circle is
In this case, we're interested in half the area of a circle with radius 14cm, so we have
cm squared.
A competition problem requires one hour to fully develop (write, proofread, edit, and typeset). This problem is then given to 30
2 answers:
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