. If the diameter of a circle is 7 cm then write the length of its semi- circular arc.
Answers
Answered by
13
Answer:
18 cm
Step-by-step explanation:
length of arc is perimeter of semi circle hence
2 r = 7
r = 7/2
formula
πr+ 2r
22/7×7/2+7
18 cm ...
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Answered by
1
The required length of the semi-circular arc is 18 cm.
Tips:
If r be the radius of a circle, then the length of its semi-circular arc is given by
Step-by-step explanation:
Given, the diameter of the circle = 7 cm
Then radius = cm
Thus the length of the semi-circular arc
= cm
= cm
- since
= (11 + 7) cm
= 18 cm
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