Since the formula for the base of the cylinder is

, multiplying that by 10 we get

. Hope this helps!
Answer:
Step-by-step explanation:
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Look at the photo below for the answer.
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Diameter of semicircle is 4 cm
so cicumference of circle is 4pi
since there are 4 semicircles, they add up to 2 circles
so total perimeter is 8pi
which when rounded off is 25.13 cm (2d. p.)