The following circles and semicircle have the same diameter of

banganX

banganX

Answered question

2021-08-10

The following circles and semicircle have the same diameter of length 21. Find the sum of their circumferences/perimeter. Round your answer to the nearest tenth.

Answer & Explanation

Arham Warner

Arham Warner

Skilled2021-08-11Added 102 answers

Step 1
The figure of the circles and a semicircle are given by

To evaluate : The sum of the perimeters of the figures if the diameter of all the circles have same value of d=21.
Step 2
The sum of their perimeters can be evaluated as following:
Sum of perimeters =πd+πd+12πd
Sum of perimeters can be evalueted as following:
Sum of perimeters =πd+πd+12πd
Sum of perimeters =52πd
Sum of perimeters =52×π×21
Sum of perimeters =164.9 Required value

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