The perimeter of the following figure is
+7 cm
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1
Answer:
44 cm
Step-by-step explanation:
The perimeter of a disc is given a special name; it is called the circumference. The circumference is equal to twice the radius of the circle multiplied by the constant known as pi ( π ), which is approximately equal to 3.14159265359.
A rough approximation, commonly used in schools, is:
π=227=3.142857¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
[This is a reasonable approximation as it is only about 0.04025% too large; so roughly an error of 1 part in 2500.]
So, for your question, the circumference is approximately equal to:
2×227×radius
=447×7 cm
=44 cm
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